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.
A collection of useful little things
A messy spreadsheet. A fresh study plan. A quiet number puzzle. Find a focused space to work, learn, create or take a little break.
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 ↗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 ↗Convert SRT and VTT, shift cue timing, or export a plain-text transcript. Preview the result before downloading your subtitles.
Convert subtitles ↗Build consistent campaign links from a URL list or CSV. Keep existing parameters, save local presets, and export your tagged links.
Build campaign links ↗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 ↗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 ↗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 ↗Turn pasted spreadsheet cells, CSV or TSV into a Markdown table. Choose alignment, escape pipes and copy or download clean Markdown.
Make my table ↗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 ↗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 ↗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 ↗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 ↗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 ↗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 ↗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 ↗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 ↗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 ↗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 ↗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 ↗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 ↗Set an intention, run a focus block, and take a deliberate break. A simple timer with pause and a downloadable session log.
Open workspace ↗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 ↗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 ↗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 ↗Give each discussion a time box and an owner. Build a timed agenda, spot the total duration, and leave space for decisions.
Open workspace ↗Create a repeatable household roster. Chores rotate through the names you provide each week, with a printable table to agree on together.
Open workspace ↗Distribute a fixed number of study blocks across subjects using your chosen priorities. Get whole sessions and a simple rotation to follow.
Open workspace ↗Compare options against criteria you choose. Normalize weights, see each contribution, and download a transparent scoring table.
Open workspace ↗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 ↗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 ↗Set total flour and ingredient percentages to calculate a dough formula. Or scale the same ratios to a target dough weight.
Open workspace ↗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 ↗Practice adding or subtracting proper fractions. Check your answers, see equivalent fractions, and download a worksheet with its answer key.
Open workspace ↗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 ↗Practice typing a passage you choose. See elapsed time, correct-character speed and positional accuracy with a transparent scoring method.
Open workspace ↗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 ↗Make a scramble challenge from your own word list. Play in the browser or download a printable worksheet and separate answer section.
Open workspace ↗Create a matching game with your own short labels. Turn cards over, match pairs, and see your move count.
Open workspace ↗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 ↗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 ↗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 ↗Create A4 or US Letter dot, square or ruled paper with millimetre spacing. Preview the page and download a vector SVG.
Open workspace ↗Build a modular type scale from a base size and ratio. Compare text specimens and export CSS variables in pixels and rems.
Open workspace ↗Build a palette by mixing a HEX color with white and black in sRGB. Compare labeled swatches and download CSS custom properties.
Open workspace ↗Compose a two-color linear or radial gradient. See it on a large canvas, then copy CSS or download a vector preview.
Open workspace ↗Calculate physical print dimensions from pixel width, height and target PPI. Compare common densities without uploading or altering an image.
Open workspace ↗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 ↗Generate a rectangular maze with one route from start to finish. Explore on paper, reveal the solution, or download a vector maze.
Open workspace ↗Generate a repeatable Sudoku with a verified unique solution. Fill the empty cells, check conflicts, and reveal the solution when you choose.
Open workspace ↗Create a single round-robin schedule where each participant meets every other once. Separate rounds, handle odd-player byes, and export fixtures.
Open workspace ↗Follow the details of a planet we can study through orbiters and rovers.
Explore collection ↗A quieter view of our changing planet through observational imagery.
Explore collection ↗Explore solar observations without turning a striking picture into a prediction.
Explore collection ↗A visual trail through a giant planet and the worlds around it.
Explore collection ↗A compact guide to images of a planet shaped by rings and changing light.
Explore collection ↗Find an entry point into distant scenes, one carefully sourced image at a time.
Explore collection ↗Explore the machines behind observations and the trade-offs in how they work.
Explore collection ↗A visual introduction to asteroids and comets, their surfaces and motion.
Explore collection ↗A plan, staircase or facade can show how people solved practical problems with form.
Explore collection ↗Covers, bindings and printed pages reveal choices about materials as well as stories.
Explore collection ↗Dress can communicate craft, available materials and everyday routines.
Explore collection ↗Paths, planting and seasonality give each garden a distinct rhythm.
Explore collection ↗A reading room is shaped by light, furniture, shelves and the people it welcomes.
Explore collection ↗Maps turn streets into choices about what to label, omit and emphasize.
Explore collection ↗Theaters can be seen as buildings, meeting places and carefully designed entrances.
Explore collection ↗A travel poster has little space to turn a place into a memorable image.
Explore collection ↗A portrait or object can open a question about how an idea was tested.
Explore collection ↗Illustration can change how a familiar story feels from page to page.
Explore collection ↗A performance photograph freezes a gesture from a moving collaboration.
Explore collection ↗A playful route through language, logic and surprise.
Explore collection ↗A reading companion for first impressions and revised judgments.
Explore collection ↗A guide to a story about making, responsibility and isolation.
Explore collection ↗A doorway to short mysteries built from observation and mistaken assumptions.
Explore collection ↗A gentle companion to four sisters finding different paths.
Explore collection ↗A reading path through place, attention and gradual change.
Explore collection ↗A quiet guide to friendship, travel and returning home.
Explore collection ↗A companion to imagination, belonging and everyday mishaps.
Explore collection ↗A short reading guide to memory and a changed outlook.
Explore collection ↗A guide to voice, place and self-knowledge in a long novel.
Explore collection ↗A playful guide to companions on a journey through a fantastic place.
Explore collection ↗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.
Try a browser tool or follow a science, culture or reading guide to its original source.
Choose the settings you need. Your working input is processed on your device; you do not need to create an account.
Review the preview and any warnings. Save the result to your device, ready for the next step in your workflow.
What is actually here
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.
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.
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.
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
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.
Yes. All 80 spaces are free to browse without an account. External source sites apply their own access terms and rights notices.
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.
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.
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.
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.
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.
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.
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.
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.
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
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
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
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.