CodeVella
Local-first utilities

All online tools

Search fast, privacy-friendly tools that run locally in your browser. No upload, no signup, and no server-side processing.

57

Tools

6

Categories

46

New

57 tools available

JSON Formatter Format, validate and minify JSON easily Popular
JSON Validator Validate JSON syntax and spot parsing issues
JSON Minifier Minify JSON and remove whitespace New
JSON to Base64 Converter Convert JSON payloads to Base64 New
CSV to JSON Convert CSV rows into JSON objects New
JSON to CSV Convert JSON objects into CSV New
Base64 Encode Decode Encode and decode Base64 strings Popular
URL Encode Decode Encode or decode URL-safe text instantly
HTML Entity Encoder Encode and decode HTML entities New
QR Code Generator Generate QR codes as PNG or SVG New
UUID Generator Generate random UUID v4 instantly Popular
Timestamp Converter Convert Unix timestamps and readable dates New
Regex Tester Test JavaScript regular expressions New
Hash Generator Generate MD5, SHA-1, SHA-256 hashes Popular
SHA1 Hash Generator Generate SHA1 hashes from text New
SHA256 Hash Generator Generate SHA256 hashes from text New
MD5 Hash Generator Generate MD5 checksums from text New
JWT Decoder Decode JWT headers and payloads safely
Word Counter Count words, characters, sentences, and lines
Character Counter Count characters, spaces, bytes, and lines New
Case Converter Convert text between common case formats
Remove Duplicate Lines Clean repeated lines from text lists New
Sort Lines Sort text lines alphabetically or numerically New
Text to Slug Create clean URL slugs from text New
Lorem Ipsum Generator Generate placeholder copy for layouts New
Remove Extra Spaces Trim whitespace and clean blank lines New
Text Reverser Reverse characters, words, or lines New
Markdown Previewer Preview Markdown as safe HTML New
Markdown to HTML Convert Markdown into HTML New
HTML to Markdown Convert common HTML into Markdown New
Number to Word Converter Convert numbers into English words New
Compress PNG Online Compress PNG images in your browser New
Compress JPG Online Compress JPG images with quality control New
Image Resizer Resize images and export common formats New
PNG to WebP Convert PNG images to WebP New
JPG to PNG Convert JPG images to PNG New
eCommerce Profit Calculator Calculate profit, margin, and break-even price New
Discount Calculator Calculate sale price, savings, and total New
SKU Generator Generate clean product SKU batches New
Variant Matrix Generator Generate product variants as CSV New
Sales Tax Calculator Calculate tax from a manual rate New
Random Email Generator Generate safe example email addresses New
Random Phone Number Generator Generate synthetic US phone numbers New
Random Username Generator Generate usernames for mock accounts New
Random Date Generator Generate random dates in useful ranges New
Random Number Generator Generate random integers in a range New
Random Company Name Generator Generate fictional company names New
Random Job Title Generator Generate job titles for personas New
Random User Profile Generator Generate complete synthetic user profiles New
Random CSV Test Data Generator Generate CSV rows for tests and demos New
Random JSON Mock Data Generator Generate JSON mock records New
Random IP Address Generator Generate documentation-safe IPv4 addresses New
Random User Agent Generator Generate browser user agent strings New
PS5 Gamertag Generator Generate PSN-friendly name ideas with style filters New
Random US Address Generate test addresses for development Popular
Random Name Generator Generate synthetic names for QA and demos
Password Generator Generate strong random passwords New

Private by default

Tools are designed to process data locally in the browser whenever possible.

Static and fast

Pages are generated as static HTML first, with lightweight client-side filtering.

Built to expand

Each tool is driven by shared configuration so new tools can be added consistently.