JSON Formatter
Paste raw JSON and instantly format, validate, and minify it. Syntax highlighting included.
Open ToolNo Login · Browser-Based · Freemium
Every tool a developer
actually needs
ToolDeckApp brings your most-used development utilities together in one clean, fast interface — no accounts, no ads, no clutter.
1 Tool Live
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More Coming Soon
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Freemium Model
Developer Tools
Pick a tool and get to work. Everything runs in your browser — nothing is sent to a server.
Log Analyzer
Paste or upload log files to filter, search errors, highlight levels, and identify patterns fast.
Launching March 20th
Regex Tester
Test and debug regular expressions with live match highlighting and group capture visualization.
Base64 Encoder / Decoder
Encode and decode Base64 strings — supports plain text, URLs, and file content.
JWT Debugger
Decode and inspect JWT tokens. View header, payload, and verify signatures instantly.
Cron Expression Parser
Translate cron expressions into plain English and preview the next run times.
Why developers choose ToolDeckApp
Blazing Fast
Everything runs in your browser. Zero round-trips to a server.
No Login Required
No accounts. No email. Just open a tool and start using it.
Freemium Model
Core tools are free. Unlock advanced features with a plan that fits your workflow.
Built by Devs
Tools designed around real developer workflows, not assumptions.
Frequently Asked Questions
Got a question? We probably answered it here.
ToolDeckApp is a collection of free, browser-based developer utilities. It brings commonly-used tools like JSON formatters and log analyzers into one fast, clean interface — so you spend less time searching for tools and more time building.
ToolDeckApp uses a freemium model. Core features of each tool are available for free. Advanced features — like higher usage limits, export options, and history — are unlocked with a paid plan.
No. ToolDeckApp requires zero sign-up. Just open a tool and start using it. Your data never leaves your browser.
Your data stays entirely in your browser. ToolDeckApp tools process everything client-side and do not send your content to any server. Nothing is stored or logged.
Right now we have the JSON Formatter (live). The Log Analyzer is currently in development and launching on March 20th. More tools — including a Regex Tester, Base64 Encoder, JWT Debugger, and Cron Expression Parser — are actively in the pipeline.
We ship new tools regularly. You can suggest a tool using the form below — community requests are prioritised.
Absolutely. Use the "Suggest a Tool" form below. We review every suggestion and prioritise based on demand and usefulness.
Community Driven
Missing a tool?
Tell us what you need. We read every suggestion and build based on what developers actually use.
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