Free Online Tools Collection
π 57+ free online tools for JSON formatting, Base64 encoding, password generation, image compression, text processing, and developer productivity β all running directly in your browser.
Tool Tutorials
Encoding and API debugging tutorials
Base64 Encoding for API Payloads
Use Base64, URL encoding, and JSON checks safely in API request workflows.
Decode JWT Payload with Base64 Safely
Inspect JWT claims while separating decoding from signature validation.
URL Encoding vs Base64 Encoding
Choose the right encoding for query strings, API fields, and token-like data.
Encode
Base64 Encoder/Decoder
Encode and decode text and images to Base64
URL Encoder/Decoder
Encode and decode URLs
HTML Encoder/Decoder
HTML entity encoding and decoding
Unicode Converter
Convert text to/from Unicode encoding
ASCII Converter
NATIVE/ASCII Online Conversion Tool (Unicode Escape)
ROT13 Encoder
ROT13 encryption/decryption tool (symmetric encryption)
Security
MD5 Encrypt
MD5 hash encryption tool
SHA Encrypt
SHA hash encryption tool, support SHA-1/SHA-256/SHA-384/SHA-512
AES Encryption
AES symmetric encryption and decryption tool to protect your data security
DES Encryption
DES symmetric encryption and decryption tool
RC4 Encryption
RC4 stream encryption and decryption
Rabbit Encryption
Rabbit stream encryption and decryption
TripleDES Encryption
TripleDES encryption and decryption
RSA Encryption
RSA asymmetric encryption
Bcrypt Hash
Bcrypt password hashing
HMAC Generator
HMAC message authentication code
JWT Decoder
JWT token decoder
Dev
JSON Formatter
Format, compress, and validate JSON data
SQL Formatter
SQL statement formatting and beautifying
Regex Tester
Regular expression testing tool
Regex Generator
Common regular expression generation
Timestamp Converter
Unix timestamp conversion tool
CSS Formatter
CSS code formatting and beautifying
HTML Formatter
HTML code formatting and beautifying
XML Formatter
XML code formatting and beautifying
YAML Formatter
YAML code formatting and beautifying
Hash Generator
Batch hash value generation
UUID Generator
UUID/GUID online generation
Markdown Preview
Markdown real-time preview
Password Generator
Generate secure random passwords
Robots.txt Generator
Robots protocol generation tool
Meta Tag Generator
Webpage Meta tag generator
JavaScript Formatter
JavaScript code formatter and minifier
JavaScript Minifier
JavaScript code minifier tool
Python Formatter
Python code formatter and minifier
Images
Image Compressor
Compress images online to reduce file size
QR Code Generator
Generate custom QR codes
QR Code Decoder
Online QR code decoding tool, quickly read QR Code content
Image Converter
Online image format conversion tool
Image Cropper
Crop images online with free ratio, square and common aspect ratio presets
Image Resizer
Resize images to exact dimensions with optional aspect ratio lock
PDF to Image
Convert PDF pages to JPG or PNG images
ISBN Barcode Generator
Generate ISBN-10 and ISBN-13 barcodes for books
Barcode Generator
Create Code128, EAN, UPC, Code39 and ITF-14 barcodes online
EXIF Viewer
View EXIF data, camera settings, GPS and image metadata
Convert
Color Converter
Convert colors between HEX, RGB, and HSL
Unit Converter
Convert length, weight, temperature, area, volume and speed units
Number Base Converter
Convert between binary, octal, decimal, and hexadecimal
Roman Numeral Converter
Convert between Roman numerals and Arabic numbers
Text
Word Counter
Online word and character count
Text Diff
Text content difference comparison
Case Converter
Text case conversion tool
Find & Replace
Text find and replace tool
Duplicate Remover
Text deduplication tool
Sort Lines
Text line sorting tool
Lorem Ipsum
Placeholder text generator