easycardboard
EASY CARDBOARD / UTILITIES

A little less
busywork.

Encode a string. Convert a file. Make an image smaller.
Simple tools that get straight to it.

Free · No signup · Processed in your browser
<>ENCODE & DECODE

Text Encoder

Convert UTF-8 text to Base64, Base64URL, URL encoding, hexadecimal, or HTML entities.

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↔DATE & TIME

Timestamp Converter

Convert Unix seconds or milliseconds to dates, and ISO dates back to timestamps.

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{}FORMAT & VALIDATE

JSON Formatter

Validate, prettify, or minify JSON while preserving number literals and key order.

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⇄FILE CONVERSION

CSV / JSON Converter

Convert CSV tables and JSON arrays of objects. Paste data or open a local file.

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▧PHOTOS & IMAGES

Image Converter

Convert images to JPG, PNG, or WebP. Resize them and control export quality.

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#FILE INTEGRITY

SHA-256 Checksum

Calculate a SHA-256 hash from text or a file and compare it with an expected checksum.

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