awesome-free-online-tools

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awesome-free-online-tools

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A curated list of free, browser-based tools for developers, designers, and everyone else — no sign-up, no install.

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A curated list of free, browser-based tools that do one thing well — for developers, designers, and everyone in between. Most run entirely in the browser with no sign-up and nothing to install.

## Contents

- [Awesome Free Tools ](#awesome-free-tools-)
  - [Contents](#contents)
  - [Developer utilities](#developer-utilities)
  - [Code images \& snippets](#code-images--snippets)
  - [Data, APIs \& testing](#data-apis--testing)
  - [Security \& secrets](#security--secrets)
  - [Design \& images](#design--images)
  - [PDF \& files](#pdf--files)
  - [QR \& business cards](#qr--business-cards)
  - [Time \& date](#time--date)
  - [Career \& writing](#career--writing)
  - [Contributing](#contributing)

## Developer utilities

- **[CyberChef](https://gchq.github.io/CyberChef/)** — The "cyber Swiss Army knife": a huge, chainable toolbox for encoding, encryption, compression and data analysis.
- **[IT Tools](https://it-tools.tech)** — Open-source collection of everyday developer utilities — converters, generators and formatters — in one clean interface.
- **[DevDocs](https://devdocs.io)** — Fast, searchable, offline-capable API documentation for dozens of languages and frameworks in a single tab.
- **[regex101](https://regex101.com)** — Build and debug regular expressions with live match highlighting and a breakdown of every token.
- **[crontab.guru](https://crontab.guru)** — Translate any cron schedule expression into plain English as you type.
- **[explainshell](https://explainshell.com)** — Paste a shell command and see what every flag and argument actually does.
- **[transform.tools](https://transform.tools)** — Convert between formats: JSON to TypeScript, CSS to JS, GraphQL to code and many more.
- **[decoder.tools](https://decoder.tools)** — 90 decoders and parsers: Base64, JWT, hex, URL, classical ciphers, X.509 certificates, packet headers and structured IDs.
- **[slug.tools](https://slug.tools)** — URL and slug toolkit: slug generator, bulk CSV slugifier, UTM builder, URL parser, query cleaner and SERP preview.

## Code images & snippets

- **[Carbon](https://carbon.now.sh)** — Create and share good-looking images of your source code with editor themes and window styling.
- **[ray.so](https://ray.so)** — Turn code into clean, minimal shareable images with a tight set of themes and backgrounds.
- **[codeshot.io](https://codeshot.io)** — 17 generators for code, terminals, logs and API responses to image, with 18+ language highlighting and PNG/SVG export.

## Data, APIs & testing

- **[Mockaroo](https://mockaroo.com)** — Generate realistic mock datasets and export to CSV, JSON, SQL and Excel.
- **[JSONPlaceholder](https://jsonplaceholder.typicode.com)** — Free fake REST API for testing and prototyping front-end code.
- **[JSON Crack](https://jsoncrack.com)** — Visualize JSON, YAML and CSV as interactive node graphs.
- **[Hoppscotch](https://hoppscotch.io)** — Open-source, in-browser API client for REST, GraphQL and WebSocket requests.
- **[faker.tools](https://faker.tools)** — 79 synthetic data generators with seed-reproducible output and ready seed scripts for SQL, JSON, CSV and GraphQL.

## Security & secrets

- **[Have I Been Pwned](https://haveibeenpwned.com)** — Check whether your email or password has appeared in a known data breach.
- **[encrypt.tools](https://encrypt.tools)** — 62 cryptography tools: AES-256, RSA/ECC key generation, SHA/BLAKE hashing, HMAC, PGP and classical ciphers.
- **[apikey.tools](https://apikey.tools)** — 64 tools for API keys, tokens and secrets: key generation, JWT/HMAC debugging, secret scanning and `.env` / Kubernetes config output.

## Design & images

- **[Photopea](https://photopea.com)** — Full-featured image editor in the browser that opens and edits PSD, XCF and Sketch files.
- **[Squoosh](https://squoosh.app)** — Compress and convert images with a live before/after comparison, from the Google Chrome team.
- **[Excalidraw](https://excalidraw.com)** — Hand-drawn-style whiteboard for diagrams, wireframes and quick sketches.
- **[tldraw](https://tldraw.com)** — Fast, collaborative infinite canvas for drawing and diagramming.
- **[Coolors](https://coolors.co)** — Generate, tweak and save color palettes in seconds.
- **[remove.bg](https://remove.bg)** — Remove the background from any photo automatically.
- **[collage.tools](https://collage.tools)** — Grid collages, seamless Instagram carousels, before/after sliders and moodboards with color-palette extraction.
- **[favicon.tools](https://favicon.tools)** — Generate a full favicon set from an image, emoji or text, convert an existing logo, or audit what a live site serves.
- **[Arabify](https://arabify.io)** — Arabic calligraphy generator and logo maker with authentic Kufic, Naskh, Diwani and Nastaliq styles.

## PDF & files

- **[PDF24 Tools](https://tools.pdf24.org)** — Free suite for merging, splitting, converting and compressing PDFs.
- **[Stirling PDF](https://stirlingpdf.io)** — Open-source, self-hostable toolkit covering 50+ PDF operations.
- **[split.tools](https://split.tools)** — Split images into grids, PDFs by page range, audio on the waveform and video on a timeline.

## QR & business cards

- **[QRCode Monkey](https://www.qrcode-monkey.com)** — Custom QR codes with logos, colors and high-resolution export.
- **[qrfast.io](https://qrfast.io)** — QR codes for links, WiFi, vCards, PDFs, WhatsApp and crypto, with styling and PNG/SVG/JPEG/WEBP export.
- **[cartevisite.io](https://cartevisite.io)** — Double-sided business card maker with full typography control, logo import and a built-in QR flow.

## Time & date

- **[time.is](https://time.is)** — Exact current time anywhere, with time-zone detail for any city.
- **[World Time Buddy](https://www.worldtimebuddy.com)** — Compare time zones side by side and find meeting times across cities.
- **[worldclock.tools](https://worldclock.tools)** — Live local time for 34,043 cities, a cross-timezone meeting planner and 36 converters and timers.
- **[duration.tools](https://duration.tools)** — 32 calculators for shifts, timesheets, business days, SMPTE timecode, cron and running pace.

## Career & writing

- **[OpenResume](https://www.open-resume.com)** — Open-source resume builder and ATS-readiness checker.
- **[Hemingway Editor](https://hemingwayapp.com)** — Highlights hard-to-read sentences and passive voice so you can tighten your writing.
- **[Cviya](https://cviya.com)** — Free CV builder with drag-and-drop editing, live preview and ATS-friendly PDF/PNG export in five languages.

## Contributing

Found a free tool that belongs here? Open a pull request. Keep it free (or with a genuinely useful free tier), keep the description to one concrete line, and add it to the right section.

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