Awesome No-Signup Tools

A curated list of free, online tools that work with zero signup and zero registration — many of them fully client-side. No account and no data upload required; note that some tools may still run ads or analytics.

No accounts. No email walls. No "sign up to continue". Just tools you can use right now.

Know a tool that fits? See the contributing guidelines (linked in the badge above) and open a PR.

Contents

• Utilities
• DevTools
• Design
• Productivity
• Privacy
• Converters
• Text & Writing

Utilities

• Audio Cutter Online - Cuts, trims, joins, and fades audio files and exports MP3, WAV, FLAC, OGG, M4A, and AIFF, no signup, runs entirely client-side in the browser.
• FreeToolHub - Collection of 190+ free calculators and file utilities covering tax, finance, PDF and image work, no signup, runs client-side in the browser.
• BuildEstimate - Construction material calculators (concrete, brick, paint, tile, gravel) with bag counts and waste allowance in metric and imperial, no signup, calculations run client-side.
• Stock Average Calculator - Share cost basis, averaging down, dividend, profit and CAGR calculators, no signup, calculations run client-side in the browser.
• Utilia - Spanish collection of free browser tools for calculators, QR codes, text, conversions, images, and classroom tasks; no account required.
• kdpbook.io Word Search Maker - Makes a printable word search from your own words or a theme, 8×8 to 22×22 grid, with the answer key on its own page, no signup, runs client-side in the browser.

DevTools

• Diffchecker - Compare text, files, images, or JSON side-by-side; no signup required for standard diffs.
• Regex101 - Regex tester and debugger with real-time explanation, no signup, runs matching client-side in the browser.
• JSFiddle - Online HTML/CSS/JS code editor and playground, no signup required to create and run a fiddle.
• JSONLint - Validates and reformats JSON, no signup required.
• Can I Use - Browser support tables for HTML5, CSS3, and other web technologies, no signup required.
• TryDevSnip - JSON formatter, cron helper, timestamps, JWT, and hash tools that run in the browser with no signup; processing stays client-side.
• QuickTiny - Detects pasted JSON, Base64, encoded URLs, timestamps, or lists and routes to the matching tool among 13 free browser utilities, no signup; processing runs client-side.

Design

• Photopea - Photoshop-like image editor that opens PSD, XD, and Sketch files directly in the browser, no signup, files processed client-side.
• Excalidraw - Free virtual whiteboard for sketches and diagrams, no signup, open-source, runs entirely client-side.
• Coolors - Color palette generator, no signup required to generate and explore palettes (saving palettes requires an account).
• Google Fonts - Browse and download open-source fonts, no signup required.
• Unsplash - Browse and download free high-resolution stock photos, no signup required.
• AI Coloring Page Generator - Converts a photo into black-and-white line art and exports it as a printable A4 or US Letter page at 300 DPI, with all processing done client-side.
• Background Remover - Free browser tool to remove image backgrounds with no signup; processing runs locally in the browser.

Productivity

• Pomofocus - Customizable Pomodoro timer with task tracking, no signup required to start a session.
• World Time Buddy - Time zone converter and meeting planner, no signup required to use (sign-in is optional, only needed to save settings).
• Desmos - Free scientific and graphing calculator, no signup required.
• MindMup - Browser-based mind mapping tool, no signup required to create a map.
• Privnote - Creates a self-destructing note that deletes itself after being read once, no signup required.
• TryCalculatingNow - GPA, final grade, percentage, and compound-interest calculators with no signup.
• Corbelworks - Free calculators for contractors and small businesses covering break-even billable rate, change-order cost, service-call minimums, late-invoice carrying cost, and bid go/no-go, no signup, runs client-side in the browser.
• Naratake Free Business Tools - 35 tools for small businesses covering QR codes, printable signs, menus, and pricing calculators, no signup, runs client-side in the browser.
• Drag Task - Calendar-shaped to-do list for adding tasks to days and dragging them to reschedule; the no-signup demo stores data only in the open tab.
• OutilCalcul - Free instant calculators for everyday needs (salary, dates, geometry, unit conversions, French labor-law calculations), no signup required.

Privacy

• SSL Server Test - Deep analysis of a domain's SSL/TLS configuration by Qualys, no signup required.
• VirusTotal - Scans a file or URL against dozens of antivirus engines, no signup required for a basic scan.
• Cover Your Tracks - Tests how well your browser is protected from tracking and fingerprinting, no signup, a project of the EFF.
• Metadata Remover - Inspects and removes supported file metadata locally in the browser, no signup required.

Converters

• TinyPNG - Compresses PNG, JPEG, and WebP images, no signup required (free tier: up to 20 images per batch, 5MB each).
• CloudConvert - Converts between 200+ document, image, audio, video, and archive formats, no signup required (free tier: 25 conversion minutes per day).
• PDF24 Tools - Merges, splits, compresses, and converts PDFs, no signup required (files are processed on PDF24's servers and deleted shortly after).
• TryQuickImg - HEIC to JPG, compress to a KB target, resize, crop, and QR tools with no signup; image processing runs client-side in the browser.
• AVIF to JPG Converter - Converts AVIF images to JPG in bulk with a quality slider, background fill for transparency, and Retina scaling, no signup, runs entirely client-side in the browser.
• Image to ASCII - Converts images to ASCII art with adjustable styles and TXT, PNG, or SVG export, no signup, with image processing in the browser.
• FileOnTap - Free image and PDF converter with no signup; files are processed locally in the browser and are not uploaded.

Text & Writing

• LanguageTool - Grammar, spelling, and style checker supporting 30+ languages, no signup required for the free version.
• DeepL Translate - Machine translation across 30+ languages, no signup required for the web translator.
• Google Translate - Machine translation across 100+ languages, no signup required.
• Duplicate Line Remover - Removes duplicate lines from text, lists, or logs with options for case sensitivity, whitespace trimming, and sorting, no signup, runs entirely client-side in the browser.
• Need Go Home - Generates short, professional messages for telling your manager you need to leave work early, across a range of situations and languages, no signup, runs client-side in the browser.
• CharCount - Free character, word, and text counter with support for 11 languages, no signup, client-side processing.

Contributing

Tools that don't meet our criteria are tracked in no-go-list.md. See the contributing guidelines linked above for how to add a tool.

To the extent possible under law, the contributors have waived all copyright and related rights to this work.