Automatically detect and decode Base64 data for any file type
Automatically identifies file type by analyzing the Base64 data structure and magic numbers.
Supports text, images (PNG, JPEG, GIF, WebP), PDF, Word documents, and Excel spreadsheets.
All processing happens locally in your browser. No data is sent to any server.
Hop to nearby dev utilities without losing context.
Quick steps so you can get results fast.
Input text, code, or payloads directly. Most tools auto-detect format and encoding.
Choose the transform—format, validate, convert, or decode. Defaults match the current tool.
See live output alongside the input so you can spot issues before copying.
Copy results to clipboard or export when available. No signup needed.
Everything you need to know about Universal Decoder.
Answers to the most common devtool questions.
Most dev tools run entirely in your browser. For tools that need server help, requests are encrypted.
No. Inputs are kept in-memory in your session. Nothing is logged for formatting or validation tools.
Yes. Common shortcuts like Ctrl/Cmd + A/C/V work. Some tools also support Ctrl/Cmd + Enter to run.
We preserve semantics. Converters and formatters avoid altering values, only structure and spacing.
Use the feedback link in the header or share a sample payload. We typically patch fixes within a day.