Developer tools that work offline

CodeForge puts 18 everyday developer tools in one fast workspace: format JSON, decode JWTs, test regex, convert timestamps, generate UUIDs and more. Use it free in your browser, or install the Windows app and keep working with no connection. Your data stays on your device.

Open CodeForge — free Get the Windows app

Free in your browser — no sign-up. Install from the Microsoft Store to use it offline on Windows 10 and 11.

All tools

Data

JSON FormatterFormat, validate and minify JSON.JSON to TypeScriptGenerate TypeScript, Zod, Go and more from JSON.SQL FormatterFormat and minify SQL queries.SQL INSERT Generator PROCSV or JSON to batched INSERT statements.

Web & API

cURL Builder & ParserBuild, parse and inspect HTTP requests.API Workspace PROSend requests, save collections, generate client code.

Encode & Crypto

JWT DecoderDecode tokens; verify and sign with Pro.Base64 Encode & DecodeEncode or decode Base64 text and files.URL Encode & DecodePercent-encode and decode URLs.Hash GeneratorMD5, SHA-1, SHA-256 and SHA-512.UUID GeneratorUUID v4, v7, ULID and Nano ID.

Text

Regex TesterLive matches, groups and test cases.Text DiffCompare two texts line by line.Case ConvertercamelCase, snake_case, kebab-case and more.Markdown PreviewLive preview, export to HTML.Lorem Ipsum GeneratorPlaceholder words and paragraphs.

Time & Color

Unix Timestamp ConverterUnix time to dates and back.Cron Expression ParserExplain cron and preview next runs.Color ConverterHEX, RGB, HSL and contrast.

Why developers use CodeForge

Private and offline — tools run locally, so you can paste production payloads, tokens and logs without sending them to someone else’s server.
Built for Windows — a Windows 11 design with light and dark themes, and it opens .json, .md, .sql, .csv and .jwt files directly.
Keyboard first — Ctrl+K searches every tool and action; Ctrl+J runs quick commands like format json or uuid 5.
Paste anything — drop JSON, a JWT, a URL, Base64, a timestamp, a color or a UUID on the home screen and CodeForge opens the right tool.

Free and Pro

	Free	Pro
Price	$0	$19.99 once, or $4.99/month
JSON	Format, validate, minify, sort keys, YAML	Everything in Free
JSON → code	TypeScript and JavaScript (root type)	Nested types + Zod, Pydantic, Go, Rust, Java, C#, Kotlin, Swift, Dart
JWT	Decode and expiry check	Verify, sign, generate key pairs
API	cURL builder and parser, header analyzer	API Workspace with saved collections
SQL	Format and minify	SQL INSERT generator from CSV or JSON
Batch	—	Process folders of JSON, Base64 and hashes
Markdown	Live preview, copy HTML	PDF and DOCX export, Mermaid diagrams

Frequently asked questions

Is CodeForge free?

Yes. Most tools are free, with no account and no sign-up. Pro is an optional upgrade — $19.99 once or $4.99 a month — that unlocks extra tools and options.

Does it work offline?

Yes. Install CodeForge from the Microsoft Store and every tool works without an internet connection. The browser version also caches itself after your first visit.

Is my data uploaded?

No. The tools run on your device, so JSON, tokens, SQL and files you paste stay there. Data is only sent if you choose one of the optional AI actions, such as explaining a regex.

Which Windows versions are supported?

Windows 10 and Windows 11, through the Microsoft Store. The web version runs in any modern browser.

What do the AI features cost?

AI actions use credits. New installs get a few free credits, Pro adds 30 more, and credit packs never expire. Every non-AI feature works without credits.

Open CodeForge — free Get the Windows app

Free in your browser — no sign-up. Install from the Microsoft Store to use it offline on Windows 10 and 11.