Fast, Private Developer Tools

Free browser-based tools for JSON, SQL, encoding, regex, CSV, Markdown, and everyday development tasks.

Your tool input is processed locally in your browser — no uploads, no signup, free to use.

No signupLocal processingFree to use

JSON Formatter — techfixgen.com

{ "user": { "name": "Ada", "role": "Admin" } }

{
  "user": {
    "name": "Ada",
    "role": "Admin"
  }
}

Popular

The tools developers use most

A compact set of core utilities developers frequently need, all free and running in your browser.

Looking for something else? Browse the full catalog of fast and secure developer tools.

Toolkits

Tools, organized by purpose

Browse by category to find available tools for your development workflow.

JSON

11 tools

Format, validate, compare, and convert JSON into CSV or TypeScript.

Explore JSON

Encoding

7 tools

Encode and decode Base64, URLs, and HTML entities with Unicode support.

Explore Encoding

Text & Regex

10 tools

Test regular expressions, format HTML, preview Markdown, and compare text in your browser.

Explore Text & Regex

Security

4 tools

Generate text and file checksums, inspect JWTs, generate passwords, and create UUIDs.

Explore Security

Date & Time

4 tools

Convert Unix timestamps, convert time zones, and calculate date differences — all locally in your browser.

Explore Date & Time

CSV

3 tools

View CSV data and convert rows into JSON or SQL.

Explore CSV

SQL

1 tool

Format SQL queries and generate INSERT statements from CSV.

Explore SQL

Featured

Discover something useful

Newer and curated utilities worth adding to your development workflow.

View all tools

JSONPath Tester

Run JSONPath queries against JSON and see every match with its path and JSON pointer.

Open tool

JSON Schema Validator

Check a JSON document against a JSON Schema and get precise failures with paths and keywords.

Open tool

YAML Formatter & Validator

Format and check YAML syntax in your browser, keeping comments and structure.

Open tool

XML Formatter & Validator

Indent XML and check whether it is well-formed, directly in your browser.

Open tool

Why TechFixGen

Built for people who think in data

Practical utilities for working with data, debugging APIs, and preparing test inputs.

Browser-based processing

Format, compare, and decode tool inputs locally in your browser, without uploading them for processing.

Private by design

Your tool inputs are processed locally in your browser and are not uploaded to TechFixGen.

Everyday development tasks

Format JSON, compare API responses, and inspect JWTs while developing and testing your applications.

No installation

Open a tool in your browser and start working without installing a desktop app or extension.

Find tools fast

Search directly from the homepage or browse the full catalog by category.

Free to use

Use the tools without a subscription or an account.

Local by default

Tool inputs are processed in your browser

Ready instantly

No installation or account required

Built for daily work

Focused utilities without unnecessary setup

Get started

Find the tool you need

Browse the full catalog or jump straight into a developer utility.

Browse all tools