DevBento

Developer tools, neatly packed.

100% client-side. Your data never leaves your browser.

Press ⌘K to search tools

Generators

css

CSS Gradient Generator

Create linear, radial, and conic CSS gradients visually

.git

.gitignore Generator

Generate .gitignore files from 30+ project templates

sha

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes

jwt

JWT Generator

Generate signed JWT tokens for testing. Supports HS256 and RS256 signing with configurable claims.

Lorem Ipsum Generator — Placeholder Text in 20 Languages

Generate Lorem Ipsum placeholder text in 20 languages

{ }

Mermaid Diagram Editor

Create diagrams with live Mermaid preview, export as SVG or PNG

***

Password Generator

Generate secure passwords with customizable character sets

QR

QR Code Generator

Generate QR codes with custom colors, sizes, and error correction

rnd

Random String / API Key Generator

Generate random strings, API keys, and tokens with custom character sets

uuid

UUID Generator

Generate random v4 and time-sorted v7 UUIDs in bulk

Converters

bg

Background Remover

Remove image backgrounds with AI, 100% in your browser

rgb

Color Converter + Palette

Convert colors between HEX, RGB, HSL, and generate palettes

🎨

Color Palette from Image

Extract dominant colors from any image

📐

CSS Units Converter

Convert between CSS units: px, rem, em, vw, pt, cm, mm, in

yml

YAML / JSON / TOML / .env Converter

Convert between YAML, JSON, TOML, and .env instantly

img

Image Format Converter

Convert images between PNG, JPG, WebP, HEIC, and more

id

Passport Photo Maker

Create compliant passport photos for any country

🌍

Timezone Converter

Convert time between any IANA timezones with DST-aware offsets and multiple targets

unix

Unix Timestamp Converter

Convert Unix timestamps to dates with timezone support

rgb

WCAG Color Contrast Checker

Check foreground/background color pairs against WCAG 2.x and APCA contrast standards with live preview and accessible color suggestions

Viewers

+/-

Diff Checker

Compare text side by side with character-level highlighting

har

HAR Viewer & Sanitizer

View and sanitize HAR files for secure sharing

HTTP

HTTP Status Code Reference

Look up every HTTP status code with plain English explanations

.md

Markdown Preview

Render Markdown to HTML in real time with GFM support

/re/

Regex Tester

Test regular expressions with live match highlighting

◇

SVG Viewer & Optimizer

View, optimize, trace, and format SVG files in your browser

encoders-decoders

b64

Base64 Encode/Decode

Encode and decode Base64 strings with UTF-8 support

jwt

JWT Decoder

Decode JWT tokens and inspect header, payload, and expiry

%20

URL Encoder & HTML Entity Encoder

Encode and decode URLs and HTML entities

Formatters

</>

SQL / CSS / HTML Formatter

Format and minify SQL, CSS, and HTML with syntax highlighting

{}

JSON Formatter + Tree Viewer

Format, minify, and validate JSON with syntax highlighting

Calculators

* *

Cron Expression Builder

Build cron expressions with plain English explanations

pwr

Password Strength Analyzer

Analyze password strength with entropy, crack time estimates, and pattern detection

T

Text Statistics

Count words, characters, lines, sentences, paragraphs, and reading time. Deep analysis with word frequency and readability scores.

tok

Token Counter + LLM Cost Calculator

Count tokens and estimate LLM API costs across providers

📐

Unit Converter

Convert between length, weight, temperature, speed, and more