All tools run in your browser. Your data never leaves your device.

Useful Patch

Free tools for invoices, data conversion, and document processing. No signup required.

⚡ Invoice Extraction API — Docs & Pricing

Invoice and Document Tools
Developer and Utility Tools
{ }

JSON Formatter and Validator

Format, validate, and minify JSON data with syntax highlighting.

New
🔄

CSV to JSON Converter

Convert CSV files to JSON format instantly. Handles headers automatically.

New
🔐

Base64 Encode / Decode

Encode or decode Base64 strings. Handles text and file uploads.

New
📝

Resume Match Checker

Check how well your resume matches a job description. Get your match score.

Free
🔀

YAML to JSON Converter

Convert between YAML and JSON formats instantly. Handles nested objects, arrays, and all data types.

New
📄

HTML to Markdown

Convert HTML to clean Markdown. Handles headings, links, lists, tables, code blocks and more.

New
📐

XML Formatter and Validator

Pretty-print, minify and validate XML documents with syntax highlighting and error detection.

New
🤖

Robots.txt Generator

Generate robots.txt files with presets for SEO, AI bot blocking, and custom rules.

New
🎨

CSS Gradient Generator

Create beautiful linear and radial CSS gradients visually. Copy the code instantly.

New
🔤

Text Case Converter

Convert text between UPPER, lower, Title, camelCase, snake_case, kebab-case and more instantly.

New
🖼️

Image Compressor

Compress and resize images in your browser. Supports JPG, PNG, WebP. No upload to any server.

New
🔄

JSON to YAML Converter

Convert JSON to YAML format instantly. Handles nested objects, arrays, and all data types.

New
🍅

Pomodoro Timer

Focus timer with 25/5 minute cycles. Customizable durations, audio alerts, session tracking.

New
📱

Social Media Character Counter

Check text against character limits for Twitter, Instagram, TikTok, LinkedIn, YouTube and more.

New
⏱️

Epoch & Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates. Live epoch clock, timezone support.

New
💾

Data Size Converter

Convert between bytes, KB, MB, GB, TB. Binary and decimal systems. Bandwidth calculator.

New
🎯

Color Picker — HEX, RGB, HSL

Visual color picker with HEX, RGB, HSL output. Contrast checker, palette history.

New

JavaScript Minifier

Minify JavaScript code by removing comments and whitespace. Shows compression stats.

New
🔒

Privacy Policy Generator

Generate a professional privacy policy for your website. GDPR and CCPA compliant. Free.

New
📐

Aspect Ratio Calculator

Calculate and convert aspect ratios. 8 presets, lock ratio, visual preview. Free.

New
😀

Emoji Picker & Search

Search and copy 300+ emojis by name or category. Recent history saved locally.

New
🌐

IP Subnet Calculator

Calculate network details from CIDR or subnet mask. Visual binary breakdown included.

New
⚙️

.htaccess Generator

Generate Apache .htaccess rules with toggles. HTTPS redirect, caching, security headers.

New

Crontab Generator

Build cron expressions visually. 11 presets, human-readable output, next 5 run times.

New
✍️

Markdown Editor

Write Markdown with a live HTML preview. Toolbar, dark mode, word count, and export options.

New
🔍

JSON Path Finder

Paste JSON and click any value to get its JSONPath expression. Interactive collapsible tree view.

New
📡

HTTP Status Codes

Complete HTTP status code reference with search, filtering, and troubleshooting tips for every code.

New
📦

CSS Flexbox Generator

Visual Flexbox playground. Adjust direction, alignment, gap, wrap — copy the CSS instantly.

New
🖼️

Base64 Image Encoder

Convert images to Base64 data URIs for embedding in HTML, CSS, and JSON. Decode Base64 to images.

New
Comparisons and Guides
Alternatives
More Invoice Workflow Tools
New Comparisons and Buying Guides