Encoding & Decoding
Free encoding and conversion tools for Base64, URLs, HTML entities, CSV, Excel, QR codes, barcodes, and ZIP files with local browser processing.
Encoding & Decoding
Free encoding and conversion tools for Base64, URLs, HTML entities, CSV, Excel, QR codes, barcodes, and ZIP files with local browser processing.
Base64 Encoder & Decoder
Free online Base64 encoder and decoder for UTF-8 text, Unicode, and images. Convert Base64 instantly with local browser processing and no signup.
JSON Escape Tool
Free online JSON escape tool for quick JSON string escaping and unescaping. Handle quotes, newlines, tabs and special characters, easy code embedding.
URL Encoder & Decoder
Free online URL encoder and decoder for parameters, Unicode text, and special characters. Fix URL encoding issues instantly in your browser.
HTML Entity Encoder
Free online HTML entity encoder & decoder converting special characters to HTML entities. Prevent XSS attacks, ensure safe HTML display.
Unicode Converter
Free online Unicode encoder & decoder supporting multiple formats: \uXXXX, &#xXXXX;, etc. Handle internationalized text easily, solve encoding issues.
CSV to JSON Converter
Free online CSV to JSON converter with custom delimiter support and first-row-as-header option. Quickly convert tabular data to JSON format for programming use.
CSV to SQL Converter
Online CSV to SQL tool, supports custom table names, delimiters, and quote styles. Quickly convert CSV data to SQL INSERT statements for easy database import.
Excel to JSON Converter
Online Excel to JSON converter. Supports .xlsx and .xls formats with multiple sheet selection. Convert spreadsheet data to JSON format locally.
Excel to SQL Converter
Online Excel to SQL converter. Supports .xlsx and .xls formats with multiple sheet selection. Convert spreadsheet data to SQL INSERT statements locally.
QR Code Decoder
Free online QR code decoder. Upload images, drag & drop, or paste from clipboard to scan and decode QR codes. All processing happens in your browser for privacy.
Barcode Decoder
Free online barcode decoder. Upload, drag and drop, or paste an image to scan CODE128, EAN13, EAN8, UPC, and CODE39 barcodes in your browser.
ZIP Pack & Compress
Free online ZIP pack and compress tool. Add multiple files with drag and drop, then download a ZIP archive with local browser processing.
ZIP Unpack & Extract
Free online ZIP extractor. Upload a ZIP archive to preview files, download selected items, or extract everything with local browser processing.
What you can do here
Encoding & Decoding brings together 13 focused browser tools for everyday work. The tools on this page are grouped by task so you can move from discovery to action without opening several separate websites.
Most tools run directly in your browser, which helps keep pasted text, code, files, and generated results on your own device whenever the tool does not require a server-side check.
Common use cases
- Quickly choose the right encoding & decoding tool from a single page.
- Handle related tasks such as Base64 Encoder & Decoder, JSON Escape Tool, URL Encoder & Decoder without changing context.
- Bookmark the category page as a compact toolbox for repeated daily workflows.
FAQ
Are these encoding & decoding tools free?
Yes. The tools listed on this page are available online without requiring a subscription.
Do I need to install anything?
No. Open the tool in your browser and use it directly on desktop, tablet, or mobile.
Which tool should I start with?
Start with the card that matches your current task. Each card links to a dedicated page with the controls, examples, and usage notes for that tool.