Utilidades para desarrolladores en tu navegador

Sin subidas a nuestros servidores: tu entrada permanece en el dispositivo. Elige una herramienta abajo; cada una tiene una URL clara (por ejemplo /es/json/).

Built for quick tasks

Privacy-first by design

These utilities run as client-side JavaScript in your tab.

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Jump to a topic or open the full category page.

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Featured shortcuts plus a dedicated page for every topic.

All tools

Age Calculator locally in your tab — quick and privacy-friendly.

Codifica texto plano a Base64 o decodifica Base64 a texto, con UTF-8 correcto para emoji, acentos y alfabetos no latinos.

Simple fields for adults, children, and appetite — instant estimates for meat, linguiça-style sausage, charcoal, ice, and soft drinks. Runs only in your browser.

Business Days locally in your tab — quick and privacy-friendly.

Case Converter locally in your tab — quick and privacy-friendly.

Character Counter locally in your tab — quick and privacy-friendly.

Deja el CSS legible para revisar y depurar, o minifícalo para quitar espacios y reducir descarga (la librería solo se carga en esta página).

Csv To Json locally in your tab — quick and privacy-friendly.

Csv Tsv Converter locally in your tab — quick and privacy-friendly.

Date Difference locally in your tab — quick and privacy-friendly.

Dedupe Lines locally in your tab — quick and privacy-friendly.

Scan pasted text for email-shaped tokens, drop duplicates, optionally sort, and join with newline, comma, tab, pipe, or a custom delimiter — all in your browser.

Favicon Generator locally in your tab — quick and privacy-friendly.

Hash Generator locally in your tab — quick and privacy-friendly.

Mejora la indentación del HTML o previsualiza el resultado en un iframe aislado; el código de la vista previa no se ejecuta en esta página.

Image Compress locally in your tab — quick and privacy-friendly.

Image Convert locally in your tab — quick and privacy-friendly.

Image Crop locally in your tab — quick and privacy-friendly.

Image Resize locally in your tab — quick and privacy-friendly.

Stack photos or scans into one A4-sized PDF — order images with the arrow buttons, then download. Processing stays on your device.

Da formato legible al JSON, reduce tamaño con minificar, valida la sintaxis y navega objetos en árbol — ideal para APIs REST y archivos de configuración. Todo corre en tu navegador.

Json To Csv locally in your tab — quick and privacy-friendly.

Jwt Decoder locally in your tab — quick and privacy-friendly.

Meta Preview locally in your tab — quick and privacy-friendly.

Name Picker locally in your tab — quick and privacy-friendly.

Enter adults, children, hours, and whether you are serving snacks only or a meal — get starter numbers for cake, salgadinhos, and drinks.

Pdf Compress locally in your tab — quick and privacy-friendly.

Pdf Delete Pages locally in your tab — quick and privacy-friendly.

Pdf Extract Pages locally in your tab — quick and privacy-friendly.

Pdf Merge locally in your tab — quick and privacy-friendly.

Pdf Page Count locally in your tab — quick and privacy-friendly.

Pdf Reorder locally in your tab — quick and privacy-friendly.

Pdf Rotate locally in your tab — quick and privacy-friendly.

Pdf Split locally in your tab — quick and privacy-friendly.

Open a PDF and download each page as a high-resolution PNG — powered by pdf.js in your tab, not a remote converter.

Pdf Watermark locally in your tab — quick and privacy-friendly.

Pizza Calculator locally in your tab — quick and privacy-friendly.

Qr Code locally in your tab — quick and privacy-friendly.

Regex Tester locally in your tab — quick and privacy-friendly.

Focus the paste area and paste from the clipboard, or pick image files — build a one-page or multi-page PDF locally.

Slug Generator locally in your tab — quick and privacy-friendly.

Social Image Size locally in your tab — quick and privacy-friendly.

Sort Lines locally in your tab — quick and privacy-friendly.

Text Diff locally in your tab — quick and privacy-friendly.

Convierte tiempo Unix en segundos o milisegundos a fechas legibles, escribe fechas ISO en UTC y ve todos los campos actualizarse — útil para APIs, logs y depuración.

Timezone Converter locally in your tab — quick and privacy-friendly.

Trim Spaces locally in your tab — quick and privacy-friendly.

Url Encode locally in your tab — quick and privacy-friendly.

Url Extract locally in your tab — quick and privacy-friendly.

Utm Builder locally in your tab — quick and privacy-friendly.

Uuid Generator locally in your tab — quick and privacy-friendly.

Wheel Spinner locally in your tab — quick and privacy-friendly.

Word Counter locally in your tab — quick and privacy-friendly.

Añade saltos e indentación al XML, detecta errores del analizador y lee configs, RSS o payloads empresariales con más claridad.

Yaml Json locally in your tab — quick and privacy-friendly.

Simulate months of compounding with separate monthly or annual rates for return, admin, and inflation — runs entirely in your browser.