omne Privacy GitHub

100% local · zero upload

Your browser is the toolkit.

Convert, edit, generate — all in your browser. Files never leave your device.

90tools

0uploads, ever

100%open source

Most used

A curated starting point.

Merge PDFs

Combine multiple PDFs into one. Pages are shown so you can see what you're merging.

Resize image

Scale an image to a new width and height — with live preview.

Remove background

AI-powered background removal — gives you a transparent PNG with live preview.

Extract audio from video

Pull the soundtrack out of an MP4, MOV, WebM or MKV file as MP3, WAV, M4A or FLAC.

Generate password

Create a strong random password — fully customizable, generated locally with crypto-grade randomness.

JSON formatter

Beautify, minify, sort keys, validate — with live preview.

Browse by category

Pick a family of tools.

PDF tools8 tools

Video tools13 tools

Audio tools6 tools

Image tools8 tools

SVG tools6 tools

Password tools5 tools

JSON tools7 tools

XML tools1 tool

Text tools11 tools

Reading & accessibility5 tools

Encoding tools7 tools

QR & barcodes4 tools

Color tools7 tools

Developer tools2 tools

All tools

Search across every tool.

PDF tools

Combine multiple PDFs into one. Pages are shown so you can see what you're merging.

Pick the pages you want, download them one by one or as a single PDF.

Rotate each page independently — click the ↻ on a page to cycle 90°.

Stamp every page of a PDF with text or a logo — diagonal, semi-transparent, in your browser.

Change the page size of a PDF — A4, Letter, A3 or custom dimensions — with content scaling.

Click a page to download it as an image, or grab all of them as a ZIP.

Extract images from PDF

Pull every embedded image out of a PDF and download them individually or as a ZIP.

Combine images into a single PDF.

Video tools

Change video format — MP4, WebM, MOV, GIF.

Cut a clip out of a video file.

Cut a video into equal parts — 2 to 10 segments, or by fixed segment duration.

Concatenate two or more videos into a single file. Reorder before merging.

Reduce a video's file size with three quality presets (high / medium / low).

Change a video's resolution to 480p, 720p, 1080p or custom dimensions. Keep aspect ratio with padding.

Remove the audio track from a video while keeping the original quality.

Crop a rectangular region of a video. Adjust position and size before exporting.

Rotate / flip video

Rotate a video by 90, 180 or 270 degrees, or flip it horizontally or vertically.

Extract video frames

Export frames from a video as PNG or JPG images at a chosen frame rate.

Watermark video

Overlay a text watermark on a video. Choose corner position, color and opacity.

Split a long video into numbered shorts with an auto-incrementing watermark — optionally cropped to 9:16 for TikTok, Reels and YouTube Shorts.

Change video speed

Speed up or slow down a video from 0.25× to 4×, keeping the audio in pitch.

Audio tools

Edit audio tags & cover

Change MP3, FLAC, M4A or OGG tags — title, artist, album, year — and embed an album cover.

Convert between MP3, WAV, FLAC, AAC, Opus and M4A with a bitrate of your choice.

Extract audio from video

Pull the soundtrack out of an MP4, MOV, WebM or MKV file as MP3, WAV, M4A or FLAC.

Cut a section out of an MP3, WAV, FLAC, M4A, OGG or Opus file with a scrubbable waveform.

Merge audio files

Concatenate multiple audio files into one — perfect for joining recordings, podcasts or playlists.

Volume, normalize & fade

Adjust gain in decibels, normalize loudness to EBU R128 (-16 LUFS), or apply fade in / fade out.

Image tools

Change image format — PNG, JPG, or WebP.

Shrink an image by re-encoding it at a lower quality.

Scale an image to a new width and height — with live preview.

Cut a rectangular region out of an image.

Rotate & flip image

Rotate by 90° steps and flip horizontally or vertically.

Remove background

AI-powered background removal — gives you a transparent PNG with live preview.

Paste image from clipboard

Paste an image straight from your clipboard — screenshot, copy from a webpage — and save it as PNG, JPG or WebP.

Create banners and social images — solid background, text and image layers, with a live preview.

SVG tools

SVG to Data URL

Convert any SVG markup into a base64 or URL-encoded data URI — with a live thumbnail preview.

Drop or paste any SVG to preview it live, inspect its dimensions, and read its source — safely sandboxed.

SVG to PNG / JPG / WebP

Rasterize any SVG to a high-quality PNG, JPG, or WebP at the exact size you want — with live preview.

Edit SVG markup, dimensions, viewBox, colors, and transforms — with live preview. A panel-based editor that keeps your source clean.

Favicon from SVG

Generate a full favicon bundle from a single SVG: favicon.ico, apple-touch-icon, Android Chrome icons, and a webmanifest snippet — in one ZIP.

Minify and clean up your SVG with SVGO — strip metadata, round paths, remove unused IDs — with a before/after preview.

Password tools

Generate password

Create a strong random password — fully customizable, generated locally with crypto-grade randomness.

Generate passphrase

Diceware-style passphrase — random words easy to remember, hard to guess.

Compute SHA-1, SHA-256, SHA-384, or SHA-512 of any text — output as hex or base64.

Hash & verify with bcrypt

Hash a password with bcrypt (salt + rounds), or verify a password against an existing hash.

Check password strength

Estimate the entropy of a password and detect common weaknesses — all in your browser.

JSON tools

Beautify, minify, sort keys, validate — with live preview.

JSON tree viewer

Explore JSON as an interactive tree — expand, collapse, search, copy paths.

Filter and extract from any JSON using JSONPath — with live preview.

Turn an array of objects into a sortable, filterable table — with CSV export.

Convert JSON arrays to CSV and back — with delimiter and quote options.

Compare two JSON documents side-by-side — added, removed, and changed values are highlighted.

Validate JSON against a schema, or generate a schema from a sample document.

XML tools

Beautify, minify, validate and convert XML ↔ JSON — with live preview.

Text tools

Convert text between upper, lower, title, sentence, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and dot.case.

Word & character counter

Count words, characters, lines, paragraphs and sentences — with reading and speaking time estimates.

Lorem Ipsum generator

Generate Lorem Ipsum placeholder text — words, sentences, or paragraphs, optionally HTML-wrapped.

Compare two text snippets side by side. Line, word, or character diff with additions and deletions highlighted.

Test JavaScript regular expressions live with match highlighting, capture groups, named groups and find-and-replace.

Convert any text into a clean URL slug — strip accents, collapse separators, lowercase, with optional hyphen, underscore or dot separator.

Sort lines alphabetically, naturally, numerically, by length, reverse or shuffle. Optionally trim, deduplicate or remove blank lines.

Escape / unescape

Escape or unescape strings for HTML, XML, JavaScript and JSON — handles entities, unicode escapes and special characters.

Whitespace cleaner

Clean whitespace in any text — trim lines, collapse spaces, remove blank lines, convert tabs and normalize CRLF / LF line endings.

Markdown preview

Live Markdown preview with side-by-side editor. Supports headings, lists, links, code blocks, emphasis, blockquotes and tables.

Find and replace in any text — literal or regular expression mode, case sensitive, whole word, with live preview and match count.

Reading & accessibility

Bold the start of every word to guide your eye and read faster — a reading aid that helps with dyslexia and ADHD.

Text to dyslexia font

Reformat any text with the OpenDyslexic font, generous spacing and a calming colour overlay — then export it to HTML or PDF.

PDF to dyslexia font

Swap a PDF's font for OpenDyslexic while keeping the original images, columns and layout intact.

Listen to any text read out loud with adjustable speed, using your device's built-in voices — each word is highlighted as it is spoken.

Immersive reading

Read sentence by sentence with a highlight ruler, dimmed surroundings and a calming colour overlay — focus on one line at a time.

Encoding tools

Base64 encoder / decoder

Encode text or files to Base64 — or decode Base64 back to text and binary files. Standard and URL-safe alphabets.

URL encoder / decoder

Percent-encode or decode URLs and query parameters. Choose between component, full URI, or form (x-www-form-urlencoded) variants.

Decode a JSON Web Token to inspect its header, payload, and signature — entirely in your browser. Signatures are NOT verified.

Hex encoder / decoder

Encode any text into hex (UTF-8 byte sequence) or decode a hex string back to text. Separator and case configurable.

HTML entities encoder / decoder

Encode special characters to HTML entities (named, numeric or hex) or decode entities back to characters.

Binary encoder / decoder

Convert text to its UTF-8 binary representation (8 bits per byte) — and back.

Morse code encoder / decoder

Translate text to Morse code (international) and back. Optional audio playback through your speakers.

QR & barcodes

QR code generator

Generate QR codes for text, links, Wi-Fi networks and contact cards. Pick colors, size and error-correction level — everything is rendered locally in your browser.

QR code scanner

Scan a QR code with your camera or by dropping an image. The video stream and decoding stay on your device — nothing is uploaded.

Barcode generator

Generate Code 128, EAN-13 and EAN-8 barcodes as SVG. Adjust height, module width and label.

Barcode scanner

Decode barcodes from an image — Code 128, EAN-13, EAN-8, ITF, Data Matrix and more. Uses the browser's native BarcodeDetector API.

Color tools

Color converter

Convert any CSS color between HEX, RGB, HSL, HSV and OKLCH. Paste a color in any common format — everything is computed locally in your browser.

Contrast checker

Check WCAG color contrast between two colors. Get the ratio plus AA / AAA verdicts for normal and large text — everything runs locally in your browser.

Palette from image

Extract the dominant colors from an image. Pick k-means or median-cut, choose 2–16 swatches, then copy as CSS variables or JSON. Your image never leaves your browser.

CSS gradient builder

Build linear, radial or conic CSS gradients with multiple color stops, custom angle and live preview. Copy the CSS in one click.

Tints, shades & tones

Generate tints (toward white), shades (toward black) and tones (toward gray) from any base color. Great for design systems.

Mix any two colors in RGB, HSL or OKLCH space with a ratio slider. Also generates an interpolation scale.

Color blindness simulator

Simulate how a color or image looks to people with protanopia, deuteranopia, tritanopia or full achromatopsia.

Developer tools

Build a skills installer

Paste npx skills add commands, pick agents and flags, and get a single shell one-liner to install them all at once.

Browse & install skills

Discover the top skills on skills.sh by all-time, 24h trending, or hot — search the catalog, pick what you want, and get a single shell one-liner that installs them all.

How it works

Three steps, zero uploads.

1
Drop a file
Or pick one from your device. Everything stays in this tab.
2
Tweak live
Adjust settings and see the result update in real time.
3
Download
The result is generated in your browser. Nothing is uploaded.