Ttooleras
240 tools · 64 articles · no signup

Every developer tool, one keystroke away

Format JSON, decode JWTs, resize images, build regex — all in your browser. Nothing uploaded, nothing tracked, nothing to install.

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100% client-side Instant — no signup Open standards Free forever
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Tools developers reach for daily

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🏠
Mortgage Calculator
Free mortgage calculator with PMI auto-removal at 80% LTV, full amortization schedule, extra payments, and biweekly comparison. No signup.
Finance & Money
🆔
UUID Generator
Generate UUID v4, v1, v7 and GUIDs — bulk or single, instantly
Generators
🔀
JSON to YAML Converter
Convert JSON to YAML or YAML to JSON — preserves structure, nested objects
Converters
🔤
Word Counter
Count words, characters, sentences, paragraphs, and estimate reading time
Text Tools
🔄
Base64 Encoder/Decoder
Encode and decode Base64 strings, files, and images instantly
Encoders & Decoders
📡
Morse Code Translator
Translate between text and Morse code with support for letters, numbers, punctuation, and audio playback of the encoded signal.
Encoding Tools
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JSON Formatter
Format, validate, and beautify JSON instantly in your browser
Formatters & Beautifiers
📄
PDF Merge
Combine multiple PDFs into one file with drag-to-reorder — no upload needed
PDF Tools
🏷️
Meta Tag Generator
Generate SEO meta tags, Open Graph, Twitter Cards, and canonical tags
Web Tools
🌈
CSS Gradient Generator
Create linear, radial, and conic CSS gradients with live preview
CSS Tools
🔁
Refinance Calculator
Mortgage refinance calculator with break-even analysis, lifetime interest comparison, matched-term and cash-out modes, and no-closing-cost modeling. Runs in your browser.
Finance & Money
✅
JSON Validator
Validate JSON syntax and schema — pinpoint errors by line and column
JSON Tools
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Private by default

Every tool runs in your browser. Your data, URLs, keys, and files never touch a server.

No accounts, ever

Open a tool and use it. No signup, no email, no paywall, no cookie banner trying to farm you.

Built on standards

RFCs, W3C specs, real crypto libraries. Not guesswork, not AI slop.

Actually maintained

235 tools, 56 in-depth articles, and a changelog. Bugs get fixed, not buried.