A collection of useful little things

Less busywork.
More room to create.

A messy spreadsheet. A fresh study plan. A quiet number puzzle. Find a focused space to work, learn, create or take a little break.

Explore spaces ↓Free to use · No account required
80 spaces to explore
Work, learn & play
Right in your browser
80 spaces
01 / DATA WORKFLOWCSV · TSV

Tidyrows · CSV cleaner

Trim spaces, remove empty rows, and match duplicates by a chosen column. Preview your data, then export a clean CSV and duplicate report.

Clean a CSV ↗
02 / CREATIVE WORKFLOWJPG · PNG · WebP

Framebatch · Batch image editor

Resize or center-crop a batch of images, convert JPG, PNG, and WebP, and download a ZIP. Compare file sizes before you save.

Prepare your images ↗
03 / VIDEO WORKFLOWSRT · VTT

Cuecraft · Subtitle converter

Convert SRT and VTT, shift cue timing, or export a plain-text transcript. Preview the result before downloading your subtitles.

Convert subtitles ↗
04 / MARKETING WORKFLOWURL · CSV

Campaignkit · Bulk UTM builder

Build consistent campaign links from a URL list or CSV. Keep existing parameters, save local presets, and export your tagged links.

Build campaign links ↗
05 / EVENT WORKFLOWICS

Daymark · Calendar file maker

Create timed or all-day events with time zones and optional reminders. Bundle them into an ICS file to import into a calendar app.

Make a calendar file ↗
06 / Data & spreadsheets

Rowsplit · CSV file splitter

Split a CSV or TSV into smaller CSV files by row count. Keep headers, quoted commas and multiline cells, then download all parts in one ZIP.

Split my CSV ↗
07 / Data & spreadsheets

Jsonsheet · JSON to CSV converter

Convert a JSON array or NDJSON into CSV. Flatten nested objects, collect columns across records and keep arrays as JSON cells, privately in your browser.

Build my CSV ↗
08 / Writing & development

Tablemint · CSV to Markdown table generator

Turn pasted spreadsheet cells, CSV or TSV into a Markdown table. Choose alignment, escape pipes and copy or download clean Markdown.

Make my table ↗
09 / Data & spreadsheets

Listmatch · Compare two lists online

Compare two text lists to find shared items and items unique to each side. Control case and whitespace matching, then export a grouped CSV report.

Compare my lists ↗
10 / Publishing & SEO

Slugbatch · Bulk URL slug generator

Generate URL slugs for a batch of titles. Normalize accents, choose Unicode support and resolve collisions with unique numeric suffixes before exporting CSV.

Generate my slugs ↗
11 / Publishing & SEO

Linksweep · Bulk URL tracking parameter remover

Remove UTM tags and common click IDs from many URLs at once. Keep other query parameters, review removed keys and download a before-and-after CSV.

Clean my links ↗
12 / Publishing & SEO

Redirectmap · CSV to 301 redirect rules

Turn a source-to-target CSV into exact-path Nginx or Netlify-style 301 redirects. Catch duplicate paths and simple redirect loops before exporting rules.

Build redirect rules ↗
13 / Files & contacts

Contactpack · CSV to vCard converter

Convert a contact CSV into a vCard 3.0 file. Map common name, email, phone and company columns automatically, with no contact upload or signup.

Create my vCards ↗
14 / Publishing & SEO

Robotrail · Pasted robots.txt rule tester

Test draft robots.txt Allow and Disallow rules against several paths. Inspect the winning line locally before checking crawler-specific behavior on your live site.

Test these paths ↗
15 / Publishing & SEO

Crumbcraft · Breadcrumb JSON-LD generator

Create BreadcrumbList JSON-LD from a simple name-and-URL table. Preview ordered levels and download structured data that matches your visible navigation.

Build my breadcrumbs ↗
16 / Accessibility & design

Altaudit · HTML image alt text checker

Inspect pasted HTML for missing, empty or filename-like alt text. Export an image inventory to guide manual accessibility review without crawling your site.

Inspect this HTML ↗
17 / Accessibility & design

Contrastlab · WCAG color contrast checker

Check contrast between two opaque HEX colors. See the exact WCAG threshold outcomes for normal and large text, with a live reading sample and CSV report.

Check my colors ↗
18 / Everyday work

Zoneweave · Time zone meeting overlap planner

Compare 24 hourly meeting candidates across up to eight IANA time zones. Highlight shared working hours using date-specific daylight saving rules and export CSV.

Find shared hours ↗
19 / Writing & development

Draftdiff · Text comparison and line diff

Compare two plain text drafts line by line. Highlight added and removed lines, optionally ignore case or edge whitespace, and download a readable diff report.

Compare my drafts ↗
20 / Writing & development

Sqlseed · CSV to SQL INSERT generator

Convert a CSV table into SQL INSERT statements for PostgreSQL, SQLite or MySQL. Quote identifiers and text values, batch rows and optionally add a TEXT-only CREATE TABLE.

Generate my SQL ↗
21 / Planning

Focusnest · Focus & break timer

Set an intention, run a focus block, and take a deliberate break. A simple timer with pause and a downloadable session log.

Open workspace ↗
22 / Planning

Weekweave · Printable weekly planner

Turn your own priorities and daily notes into a clean, dated weekly sheet. Preview it, then print or download a standalone HTML planner.

Open workspace ↗
23 / Planning

Habitloom · Printable monthly habit tracker

Make a monthly habit sheet with the right number of days. Add up to twelve habits, then print a fresh grid for your desk.

Open workspace ↗
24 / Planning

Packlight · Trip packing checklist

Build an editable checklist from trip length and a few practical choices. Add your own essentials, tick items off, and download your list.

Open workspace ↗
25 / Planning

Agendadot · Timed meeting agenda

Give each discussion a time box and an owner. Build a timed agenda, spot the total duration, and leave space for decisions.

Open workspace ↗
26 / Planning

Chorecircle · Rotating chore roster

Create a repeatable household roster. Chores rotate through the names you provide each week, with a printable table to agree on together.

Open workspace ↗
27 / Learning

Studyblocks · Study session allocator

Distribute a fixed number of study blocks across subjects using your chosen priorities. Get whole sessions and a simple rotation to follow.

Open workspace ↗
28 / Planning

Choicegrid · Weighted decision matrix

Compare options against criteria you choose. Normalize weights, see each contribution, and download a transparent scoring table.

Open workspace ↗
29 / Planning

Fairsplit · Equal expense split worksheet

Enter what each person paid in one currency. Split the total equally to the nearest cent and see one possible set of settling transfers.

Open workspace ↗
30 / Kitchen & craft

Portionscale · Recipe quantity scaler

Scale an ingredient list by servings while keeping your original units. Decimal and simple fraction amounts are supported, with a side-by-side report.

Open workspace ↗
31 / Kitchen & craft

Doughratio · Baker’s percentage worksheet

Set total flour and ingredient percentages to calculate a dough formula. Or scale the same ratios to a target dough weight.

Open workspace ↗
32 / Kitchen & craft

Stitchcount · Knitting gauge calculator

Use your measured gauge to estimate stitch and row counts for a rectangle. Round to a chosen stitch repeat and see the resulting width.

Open workspace ↗
33 / Learning

Fractionstep · Fraction practice & answer key

Practice adding or subtracting proper fractions. Check your answers, see equivalent fractions, and download a worksheet with its answer key.

Open workspace ↗
34 / Learning

Timestrail · Multiplication practice

Build a multiplication practice set for a chosen table or a mixed session. Check answers and revisit the question set without a login.

Open workspace ↗
35 / Learning

Keytempo · Custom-text typing practice

Practice typing a passage you choose. See elapsed time, correct-character speed and positional accuracy with a transparent scoring method.

Open workspace ↗
36 / Learning

Flipmemo · Personal flashcard practice

Turn your own question-and-answer pairs into a flip-card session. Mark cards as remembered or practice them again, then export your deck.

Open workspace ↗
37 / Games

Wordtwist · Custom word scramble

Make a scramble challenge from your own word list. Play in the browser or download a printable worksheet and separate answer section.

Open workspace ↗
38 / Games

Pairgarden · Custom memory matching game

Create a matching game with your own short labels. Turn cards over, match pairs, and see your move count.

Open workspace ↗
39 / Writing

Plotseed · Original story prompt cards

Draw combinations of a character, place, object and complication from our original prompt bank. Keep a card that sparks an idea and start writing.

Open workspace ↗
40 / Writing

Verseveil · Blackout poetry studio

Bring text you wrote or have permission to use. Select the words to keep, hide the rest, and export your poem as text or a printable sheet.

Open workspace ↗
41 / Writing

Readledger · Reading log & page progress

Track pages read against the total for each book. Review individual progress and a combined page total, then print or export your reading log.

Open workspace ↗
42 / Design

Dotfolio · Dot & grid paper generator

Create A4 or US Letter dot, square or ruled paper with millimetre spacing. Preview the page and download a vector SVG.

Open workspace ↗
43 / Design

Typeladder · Modular typography scale

Build a modular type scale from a base size and ratio. Compare text specimens and export CSS variables in pixels and rems.

Open workspace ↗
44 / Design

Tintcraft · Color tints & shades

Build a palette by mixing a HEX color with white and black in sRGB. Compare labeled swatches and download CSS custom properties.

Open workspace ↗
45 / Design

Gradientlane · CSS gradient studio

Compose a two-color linear or radial gradient. See it on a large canvas, then copy CSS or download a vector preview.

Open workspace ↗
46 / Design

Printsharp · Image pixels to print size

Calculate physical print dimensions from pixel width, height and target PPI. Compare common densities without uploading or altering an image.

Open workspace ↗
47 / Games

Pixelpatch · Tiny pixel art studio

Draw a small icon on a keyboard-friendly 16 by 16 grid. Pick a color, erase individual cells, and download a transparent vector SVG.

Open workspace ↗
48 / Games

Mazemeadow · Printable maze maker

Generate a rectangular maze with one route from start to finish. Explore on paper, reveal the solution, or download a vector maze.

Open workspace ↗
49 / Games

Sudokunook · Sudoku practice nook

Generate a repeatable Sudoku with a verified unique solution. Fill the empty cells, check conflicts, and reveal the solution when you choose.

Open workspace ↗
50 / Games

Bracketbloom · Round-robin fixture planner

Create a single round-robin schedule where each participant meets every other once. Separate rounds, handle odd-player byes, and export fixtures.

Open workspace ↗
51 / Science

Mars Notebook

Follow the details of a planet we can study through orbiters and rovers.

Explore collection ↗
52 / Science

Earth Lens

A quieter view of our changing planet through observational imagery.

Explore collection ↗
53 / Science

Sun Watch

Explore solar observations without turning a striking picture into a prediction.

Explore collection ↗
54 / Science

Jupiter Notes

A visual trail through a giant planet and the worlds around it.

Explore collection ↗
55 / Science

Saturn Rings

A compact guide to images of a planet shaped by rings and changing light.

Explore collection ↗
56 / Science

Universe Atlas

Find an entry point into distant scenes, one carefully sourced image at a time.

Explore collection ↗
57 / Science

Spacecraft Files

Explore the machines behind observations and the trade-offs in how they work.

Explore collection ↗
58 / Science

Comet Paths

A visual introduction to asteroids and comets, their surfaces and motion.

Explore collection ↗
59 / Culture

Design Archive

A plan, staircase or facade can show how people solved practical problems with form.

Explore collection ↗
60 / Culture

Book Arts

Covers, bindings and printed pages reveal choices about materials as well as stories.

Explore collection ↗
61 / Culture

Fashion Frames

Dress can communicate craft, available materials and everyday routines.

Explore collection ↗
62 / Culture

Garden Pages

Paths, planting and seasonality give each garden a distinct rhythm.

Explore collection ↗
63 / Culture

Library Rooms

A reading room is shaped by light, furniture, shelves and the people it welcomes.

Explore collection ↗
64 / Culture

City Map Room

Maps turn streets into choices about what to label, omit and emphasize.

Explore collection ↗
65 / Culture

Cinema Room

Theaters can be seen as buildings, meeting places and carefully designed entrances.

Explore collection ↗
66 / Culture

Poster Journey

A travel poster has little space to turn a place into a memorable image.

Explore collection ↗
67 / Culture

Inventor Stories

A portrait or object can open a question about how an idea was tested.

Explore collection ↗
68 / Culture

Children's Prints

Illustration can change how a familiar story feels from page to page.

Explore collection ↗
69 / Culture

Jazz Frames

A performance photograph freezes a gesture from a moving collaboration.

Explore collection ↗
70 / Reading

Alice Guide

A playful route through language, logic and surprise.

Explore collection ↗
71 / Reading

Austen Pages

A reading companion for first impressions and revised judgments.

Explore collection ↗
72 / Reading

Frankenstein Notes

A guide to a story about making, responsibility and isolation.

Explore collection ↗
73 / Reading

Holmes Library

A doorway to short mysteries built from observation and mistaken assumptions.

Explore collection ↗
74 / Reading

Little Women Reads

A gentle companion to four sisters finding different paths.

Explore collection ↗
75 / Reading

Secret Garden Reads

A reading path through place, attention and gradual change.

Explore collection ↗
76 / Reading

Willow Reader

A quiet guide to friendship, travel and returning home.

Explore collection ↗
77 / Reading

Anne Pages

A companion to imagination, belonging and everyday mishaps.

Explore collection ↗
78 / Reading

Carol Reader

A short reading guide to memory and a changed outlook.

Explore collection ↗
79 / Reading

Jane Eyre Guide

A guide to voice, place and self-knowledge in a long novel.

Explore collection ↗
80 / Reading

Oz Reading

A playful guide to companions on a journey through a fantastic place.

Explore collection ↗

Your files.
Your workspace.

The tools process your working files in your browser. Start with a clearly labeled example, or bring your own input. Download the result when you are ready.

From a small task to done.

01 / CHOOSE

Choose a space

Try a browser tool or follow a science, culture or reading guide to its original source.

02 / MAKE IT YOURS

Add your files or text

Choose the settings you need. Your working input is processed on your device; you do not need to create an account.

03 / TAKE IT WITH YOU

Check, then download

Review the preview and any warnings. Save the result to your device, ready for the next step in your workflow.

What is actually here

Three bounded groups, not an endless feed.

Lavmio is not a search engine and not a news feed. Each group below is a fixed list, and a page only exists because someone decided it was worth explaining. That is why the collections grow slowly.

SCIENCE / 8 SPACES

Observation records, read carefully

Mars surface imagery, Earth from orbit, solar observations, Jupiter and its moons, Saturn's rings, galaxies and deep sky, the spacecraft that take the pictures, and small bodies such as comets and asteroids.

Records come from the NASA Image and Video Library through fixed topical queries. What a page gives you is a short orientation and a link to the official record — not a rewritten article. The habit these pages try to build is checking the instrument, the date and the caption first, because colour in astronomy often encodes a measurement rather than what an eye would see.

CULTURE / 11 SPACES

Collections as evidence

Architecture and everyday design, the physical book as an object, clothing across time, gardens, library reading rooms, historic city maps, movie theatres, travel posters, scientists and inventors in archives, classic children's book art, and jazz photography.

These draw on Library of Congress collections and blog posts. Where a subject has a permanent collection entry, the page keeps that entry even when no recent post exists, instead of padding the page with something unrelated to make it look active.

READING / 11 SPACES

One question per book

Eleven public-domain novels and story collections, from Alice's Adventures in Wonderland and Pride and Prejudice to Jane Eyre and The Wizard of Oz.

Each guide pairs one question with one way of reading: track what a character believes before and after new information arrives, notice whose account you are hearing, keep evidence separate from interpretation. The text itself is not hosted here — the guide links to a Project Gutenberg edition and then stays out of the way.

Editorial approach

How records are chosen, and what we refuse to do.

Sources are drawn from a short, fixed list: the NASA Image and Video Library for science records, Library of Congress collections and official blog posts for cultural material, and Project Gutenberg for reading editions. Queries are topical and recorded in the site's build data, so the same subject does not drift between visits. Links point at the official detail page for an item, never at a mirror, an aggregator or a copy.

Several things are deliberately not done. No article, photograph, scan, book file or PDF is copied onto this site — pages describe and link out, so the credit line, date and rights statement stay with the organisation that published them. No filler is generated to reach a page count: when a subject has no recent official record, the page keeps its permanent collection entry rather than inventing an item. No dates, viewer numbers, ratings, testimonials or usage statistics are fabricated to make a page look popular.

Updates follow the source, not a calendar. If an organisation publishes something newer on a covered subject, the record on that page can change; if nothing new arrives, nothing is churned to create the appearance of freshness. A page that says the same thing for a month is usually telling the truth.

You can check any of this. Every factual claim about a record should be traceable to the page it links to. If a description goes further than its source supports — the most common way a page like this fails — that is a defect worth reporting, and the contact page explains how.

A few useful answers.

Are these spaces free?

Yes. All 80 spaces are free to browse without an account. External source sites apply their own access terms and rights notices.

Do you upload my files?

The tools process working files and pasted input in your browser. Optional feedback is separate: opening Feedback loads a Tally-hosted form. Your working files and workspace contents are not attached to it.

Will my work be saved when I close the page?

Workspaces are temporary. Download results before closing or reloading a tool. Campaignkit saves campaign presets on this device only when you choose Save; it does not save your destination URLs.

Can I use these tools on my phone?

The layouts adapt to smaller screens. File selection and downloading depend on your browser. For large batches, a computer with more available memory may work better.

How do I report a problem or suggest a feature?

Use the Feedback button on this page or inside any tool. Describe the task, what you expected, and what happened. Your email is optional; add it only if you would like a reply. Please leave out passwords, confidential documents, and other sensitive information.

Where do the science and cultural records come from?

Science records come from the NASA Image and Video Library and cultural records from Library of Congress collections and official blog posts. Each page links to the original record so you can read its caption, date, credit line and rights statement. Reading guides link to Project Gutenberg editions of public-domain works. Nothing is copied onto this site.

Are the reading guides original writing?

Yes. The questions, the suggested way of reading, and the notes about what to check are written for these pages rather than taken from a study guide or reproduced from a publisher. They are short by design: a reading companion that tells you what a book means is less useful than one that gives you something to watch for.

Why do some collections show fewer records than others?

Because the sources differ. A subject with an active official feed can yield several recent records; a subject covered by a permanent collection entry, or one where nothing new has been published, keeps that entry alone. Pages are not padded to look evenly full, and a quiet page is not a broken one.

Can I reuse an image or a book text I found through this site?

That depends on the source, not on us — we do not grant rights in material we do not own. Check the rights statement on the original record before reusing anything. Public-domain status is often territorial: an item that is free of restrictions in one country may still be protected in another.

How often are the collections updated?

When a covered organisation publishes something new on a covered subject, that page can change; when nothing new appears, the page stays as it is. There is no fixed schedule and no requirement to show daily activity, so nothing is rewritten purely to look current.

About Lavmio

Many ways to explore.

Lavmio brings together 50 browser tools and 30 guides to science, cultural collections and classic books. The guides add original questions and link directly to official source records for context and rights information.

Browser tools explain their limits and keep working input on your device. Reading guides point to the original publisher for the full work or record. Review source dates and rights notes before relying on or reusing anything.

Have a question, found a problem, or need a different workflow? Contact us through Feedback ↗. Include your email if you would like a reply. Please describe the issue without sending confidential files or passwords.

More detail — who maintains the site, how sources are chosen, and how corrections are handled — is on the about page. The terms of use explain the conditions that apply to tool output and to material published by other organisations.

Honest limits

What these pages do not do.

They are not an archive. Because nothing is copied here, a record withdrawn by its publisher disappears from the page that linked to it. If a link stops working, that is a site defect rather than a censored item, and reporting it is useful.

They are not scholarly editions. A description orients you before you open the source. It does not establish a text, date a manuscript, or settle a contested attribution, and it should not be cited as if it did.

They are not rights clearance. A link is not a licence. Public-domain status varies by country and by publication history, and reuse decisions belong with the organisation that holds the item.

They are not ranked or sponsored. The order of spaces reflects grouping, not popularity, payment or traffic. No space can be bought into the collection.

They are not a substitute for a tool's own notes. Each utility lists the formats it accepts and the limits it enforces. Read those before relying on an export in a production workflow, and review the result before you send it anywhere important.

Last updated · October 17, 2026

A little clarity about your data.

Lavmio includes browser tools and original reading guides to science, culture and classic books. Tool inputs are processed on your device. The guides link to official sources without copying their articles, images or books. No advertising is installed. On our official lavmio.com websites, optional Google Analytics loads only after you allow it. It measures visits, approximate location, device/browser information, tool completion and download actions. Working files, text, filenames and form contents are not attached. Page query strings, fragments and referrer paths are excluded. We disable advertising features and automatic form/link tracking. Your preference is stored for six months across Lavmio websites; Google Analytics cookies also expire after six months. Use Analytics choices in the footer to change your choice or withdraw permission. Google processes measurement data; see how Google uses information from partner sites. Preview addresses do not run analytics. Like any website, the hosting service can receive ordinary request information, such as your IP address.

Feedback is optional. The Tally form loads only when you open it. It receives your submitted answers, the page or tool name, and standard connection information. We use feedback to investigate problems, improve the tools, and reply when you provide an email. Your working files are not automatically included. See Tally’s privacy policy ↗.

Feedback is stored in Tally and sent to our feedback inbox. There is no automatic deletion schedule configured. You can use Feedback to request correction or deletion of a previous message; include enough information to identify it and an email if you need a reply.

Campaignkit can store presets in your browser when you choose Save. You can remove them inside that tool. Other workspaces are temporary. Check each tool’s FAQ for its specific limitations, and review downloaded results before using them in a production workflow.

The full privacy policy sets out every category of data the site can receive, the six-month consent preference, what is deliberately excluded before a measurement is sent, and how to withdraw permission. The terms of use cover tool output, your rights in what you process, and the terms that apply to material published by other organisations.