Developer tools
Beautify or minify HTML, CSS, JavaScript and JSON, and poke at API responses without leaving the tab.
Instant.tools
50+ free tools to compress images, merge PDFs, count words, format JSON and check your site for AI crawlers. Most run in your browser, so your files stay on your device.
Explore all tools01Categories
Grouped by the file or format you're holding, not by marketing category.
Beautify or minify HTML, CSS, JavaScript and JSON, and poke at API responses without leaving the tab.
Shrink, convert, crop and resize images before they go on a web page, or find openly licensed ones.
For sites and prompts aimed at AI assistants: llms.txt, crawler access, JSON-LD, token counts and MCP config.
Switch a file or value between formats: image types, JSON and XML, hex and RGB.
Merge, split, reorder, sign and convert PDFs in the browser, with no upload for most of them.
Word counts and quick text cleanup for drafts, meta descriptions and anything with a length limit.
Hex/RGB conversion, favicon sets and other small visual assets for a site.
02Popular
The ones people open most. Each runs in the tab, no sign-up.
Shrink JPG, PNG, WebP or SVG in this tab, lossless or at the quality you pick.
PNG · JPG · SVG
Load any page's meta and Open Graph tags, preview the link cards, copy clean HTML.
Open Graph · Twitter · SEO
Build a root /llms.txt that points AI assistants at your best pages, and validate it.
llms.txt · Markdown
03All tools
Filter by name or task. Press / to search from any page.
Showing all 62 tools
Build a root /llms.txt that points AI assistants at your best pages, and validate it.
See which AI crawlers (GPTBot, ClaudeBot, PerplexityBot and more) your robots.txt allows or blocks.
Build schema.org structured data for articles, products, FAQs, events and more, with built-in checks.
Count tokens and estimate cost for GPT, Claude, Gemini and Llama prompts, with exact counts where tokenizers are public.
Generate MCP server config for Claude, Cursor, VS Code, Windsurf and Zed from one form.
Generate a JSON Schema from example JSON, then validate data against it.
Structure prompts with a role, task, context, constraints, output format and examples, with reusable variables.
Score how well a page can be read, understood and cited by AI search and assistants.
Build a robots.txt file with crawler rules, sitemaps and AI bot controls, then test any URL against it.
Turn an XML sitemap into a browsable tree of your site, with section sizes, freshness and common problems.
Write project rules for AI coding assistants once and export them as AGENTS.md, CLAUDE.md, Cursor rules and Copilot instructions.
Split Markdown docs into token-sized, heading-aware chunks with metadata, ready for RAG, embeddings or a custom GPT.
Shrink JPG, PNG, WebP or SVG in this tab, lossless or at the quality you pick.
Load any page's meta and Open Graph tags, preview the link cards, copy clean HTML.
Screenshot any public page by URL at desktop, tablet, phone or custom sizes.
Paste messy JSON, pick an indent, copy clean output. Errors show line and column.
Strip whitespace from JSON and see exactly how many bytes you saved.
Fold, search and click through big JSON, then copy the path to any value.
Turn JSON into well-formed XML, with @attributes, #text and repeating array tags.
Re-indent minified or pasted HTML, including inline <style> and <script> blocks.
Paste HTML and watch it render live in a sandbox, at laptop, tablet or phone width.
Unminify CSS: one declaration per line, with @media blocks indented properly.
Minify CSS with CSSO: strip comments, shorten colors, optionally merge rules.
Make minified JavaScript readable again, with your indent and brace style.
Convert HEX to RGB and back, plus HSL, contrast checks and a tint scale.
Make favicon.ico, Apple touch and Android icons, plus the HTML, from one image.
Count words and characters as you type, with reading time and length limits.
Make static QR codes for links, Wi‑Fi, email and phone. PNG or SVG, no expiry.
Convert batches of images to PNG, JPG, WebP or AVIF, with quality and scale.
Crop to an exact pixel size or ratio, with social presets, rotate and flip.
Search Wikimedia Commons for reusable photos and illustrations, with a credit line.
Convert iPhone HEIC photos to JPG, PNG or WebP in bulk, with location data removed.
Resize by pixels, percentage or longest side, one photo or a whole batch.
Get an image under an exact size like 20, 50 or 200 KB at the best quality that fits.
See and strip EXIF, GPS and camera data from photos without re-compressing them.
Combine PDFs in order, keep ranges like 1-3, 7, and add images as pages.
Split a PDF by picked pages, ranges, every N pages, or one file per page.
Drag PDF pages into order, rotate sideways scans and delete blank pages.
Turn photos and scans into one PDF on A4, Letter or image-sized pages.
Save PDF pages as JPG or PNG at 72, 150 or 300 DPI, all pages or a range.
Compress a video to a target size for Discord, WhatsApp or email.
Shrink the images inside a PDF; text and vector graphics stay sharp.
Turn a PDF's text into an editable .docx with headings and paragraphs.
Draw, type or upload a signature and place it on any page of a PDF.
Make a scanned PDF searchable and copyable with OCR, in 8 languages.
Lock a PDF with AES-256 and a password, or remove a password you know.
Shrink SVG files by removing editor junk and simplifying paths, with a side-by-side preview and clean code.
Pull chosen pages out of a PDF into a new file, in any order.
Preview HTML emails at desktop and mobile widths and in dark mode, and catch what breaks in Gmail and Outlook.
Build HTTP requests with headers, auth and a body, send them from your browser, and copy them as cURL, fetch or Python.
Get a private URL that captures incoming webhooks, inspect each request live, and verify its signature.
Encode text or a file to Base64, or decode Base64 back to text. UTF-8 and URL-safe.
Percent-encode text for URLs and query strings, or decode %20-style URLs back to text.
Escape <, >, & and quotes as HTML entities, or decode & and é back to text.
Change text to UPPER, lower, Title or Sentence case, or camelCase, snake_case and kebab-case.
Compare two texts side by side and see added, removed and changed lines, down to the word.
See how your title and meta description look in Google on desktop and mobile, and where they get cut off.
Generate strong random passwords with the length and characters you choose, plus a strength estimate.
Get SHA-1, SHA-256, SHA-384 and SHA-512 hashes or HMACs of text or a file, and verify a checksum.
Build or paste a cron schedule, read it in plain English, and see the next times it runs.
Format and indent SQL queries for PostgreSQL, MySQL, SQL Server, SQLite, BigQuery and more.
Click any pixel in an image to get its HEX, RGB and HSL code, plus the image's main colors.
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04Why Instant.tools
Three things we care about more than a longer tool list.
Each tool is labeled “In your browser” or “Processed online.” Screenshots and live URL checks need the network; compressing a PNG doesn't.
Browser tools start on the file you drop, so a 40 MB PDF isn't waiting on your upstream bandwidth. Very large files are limited by your device's memory.
Test whether GPTBot and friends can reach your pages, write an llms.txt, generate JSON-LD, and score a page for readiness.
05Workflow collections
Ordered sets of tools for jobs like launching a site or prepping images.
Get found and cited by AI search and assistants: open the doors, then describe your site clearly.
The finishing touches before you ship: share previews, icons and fast images.
Get any image web-ready: right size, right format, smallest file.
Everyday formatters and minifiers for the code you paste most.
06FAQ
For most tools, no. Image, PDF, text and code tools run in your browser. The exceptions are the ones that need the network, like live URL checks and screenshots. Each tool page says which kind it is, and the Privacy Policy lists what the online ones send.
Nothing. All 50+ tools are free for personal and commercial use, with no account and no watermark on output.
Not an account quota. Browser tools are limited by your device's memory, so a huge PDF or video may be slow on a phone. Online tools can have their own limits, which the page states.
Run the AI-Ready Site workflow in order: AI Crawler Checker, llms.txt Generator, JSON-LD Generator, Meta Tags Generator, then AI Readiness Checker. It checks that AI crawlers can reach your site, adds an llms.txt and structured data, and scores a page for readiness. llms.txt adoption is still uneven, so treat it as a cheap extra, not a ranking trick.
A small team that ships utilities we'd use ourselves. Questions or bugs go to the contact page, and missing tools go to Suggest a tool.
Missing something?
Describe the job and the file types involved. The most requested tools get built first.