Launched September 15, 2026
Base64 Decode
Fast Base64 encoding and decoding with file support
Free3,120 impressions#17 of its week
Encode and decode Base64 strings and files instantly in your browser. Supports text, images, and binary files. 100% client-side.
Fast, client-side Base64 encoder and decoder for text, files, images and JWTs in the browser
- for
- Developers and anyone needing quick Base64 conversion without installing software
- pricing
- free
Key features
6 features of Base64 Decode
- Instant encode/decode — Convert text, files, images or PDFs to and from Base64 instantly in the browser
- File support — Upload any file type and get a Base64 string or recover the original file client-side
- Variant options — Choose standard or URL-safe Base64, with or without padding and line-wrap settings
- Validation — Check padding, alphabet variants and malformed characters before decoding
- JWT decoder — Parse Base64URL-encoded JWT headers and payloads and view claims as formatted JSON
- Data URI generator — Create Base64 data URIs for embedding assets in HTML or CSS
Use cases
- Embedding images or fonts in CSS/HTML via data URIs
- Generating API payloads that require Base64-encoded certificates or keys
- Inspecting JWT tokens to view header and payload without server calls
Base64 Decode FAQ
Is my data sent to a server?+
All encoding and decoding happens entirely in your browser; no data leaves your device.
Can I decode URL-safe Base64 strings?+
Yes, the tool normalises URL-safe characters and can decode them directly.
Does Base64 provide security?+
No, Base64 is only an encoding format; use encryption for confidentiality.
What file types can I encode?+
Any file type, including images, PDFs, and binary files, can be uploaded and encoded.
Is there a size limit?+
The browser handles large strings, but remember Base64 inflates size by about 33 %.
Summarized by DevHunt from base64decode.co · Sep 28, 2026. Details may change; check the official site.