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DevKit

Everything you need.One place.

Convert, compress, and edit files in your browser. Free online tools — private by default, no sign-up.

Explore ToolsBrowse Categories
  • Convert PDFs
  • Compress Images
  • Edit Documents
  • Generate QR Codes
  • Developer Utilities
120+
Free tools
Fast
Processing
Private
By default
No signup
Required

Categories

Find the right tool by the kind of work you’re doing.

Images

Convert, resize-ready formats, SVG, and favicons — all in your browser.

6 toolsExplore

Documents

PDF, Word, Markdown, HTML, and ZIP — create and extract without uploading.

7 toolsExplore

Developer

JSON, YAML, JWT-adjacent data tools, model generators, and API helpers.

22 toolsExplore

Design

Colors, palettes, Lottie previews, and CSS helpers for makers.

5 toolsExplore

Generators

QR codes, UUIDs, and quick creative outputs.

2 toolsExplore

Calculators

Percentages, units, currency, and word counts for everyday math.

5 toolsExplore

Text

Case conversion, regex testing, and Markdown ↔ HTML.

3 toolsExplore

Converters

Base64, URL encoding, number bases, and timestamps.

4 toolsExplore

Security

Hash generators and JWT inspection — private and local.

3 toolsExplore

Utilities

Handy extras for deep links and everyday workflows.

1 toolExplore
  • Secure processingPrivate by default
  • Lightning fastResults in seconds
  • Nothing storedLocal by default
  • Works everywhereAny modern browser

Recently used

Pick up where you left off — last 10 tools, stored locally.

Favorites

Star any tool to keep it here — saved only on this device.

New tools

Fresh additions to the toolkit.

NewPopular

Hash Generator

MD5 and SHA hashes from text

SecurityOpen →
NewInstant

Number Base Converter

Binary, octal, decimal, hex converter

ConvertersOpen →
NewPopular

JSON ↔ YAML

Convert between JSON and YAML

DeveloperOpen →
NewPopular

JSON ↔ XML

Convert between JSON and XML

DeveloperOpen →
NewPopular

CSV ↔ JSON

Convert between CSV and JSON

DeveloperOpen →
NewPopular

Markdown ↔ HTML

Convert between Markdown and HTML

TextOpen →
NewPopular

JSON ↔ TOML

Convert between JSON and TOML

DeveloperOpen →
NewInstant

YAML ↔ XML

Convert between YAML and XML

DeveloperOpen →

Built for everyday work

Speed, privacy, and clarity without the friction.

Seconds, not minutes

Open a tool, drop a file or paste text, get the result. Built for speed on every device.

Private by default

Most tools run entirely in your browser. Your files and data stay on your device.

One calm workspace

Images, documents, generators, and developer utilities — organized, searchable, consistent.

FAQ

Quick answers about DevKit.

Yes. Every tool on the site is free to use. No account required.

Almost all tools run locally in your browser. When a tool needs different handling, it says so clearly on the page.

Students, office workers, developers, designers, teachers, creators — anyone who works with digital files and data.

Use the homepage search, or press ⌘K / Ctrl+K anywhere to open the command palette. Arrow keys and Enter work in search results.

No. If a tool isn’t live and functional, it doesn’t appear in search or categories.