Base64 Reader & Viewer Online
The Base64 reader / viewer millions of developers search for: paste once, see a live preview, enlarge to inspect, then download the decoded file—or copy text / data URI. Private in-browser.
Base64 viewer online: paste, enlarge preview, download
Searchers looking for a Base64 reader, Base64 viewer, or “paste Base64 preview image” want three things: instant preview, a way to enlarge and read small or dense content, and a reliable download of the decoded file. This page does all three in your browser—no upload, no account.
How to use this Base64 reader
- Paste a Base64 string or full data URI (data:image/png;base64,…).
- Watch the live preview: images, PDF, audio/video, decoded text, or hex.
- Click Enlarge preview for a full-page lightbox with zoom—or Open in new tab.
- Download the decoded file with the correct extension, or copy text / data URI.
Why enlarge matters (and where converters fail)
Tiny inline previews hide QR codes, UI screenshots and multi-page PDF pages. Upload-based viewers also risk leaking API tokens and customer data. Our enlarge mode keeps pixels on-device while giving you room to inspect—then download when you are sure.
What this Base64 viewer supports
- Images — PNG, JPEG, GIF, WebP, SVG, BMP, ICO, AVIF (browser support varies).
- PDF — inline iframe preview + enlarge + download .pdf.
- Audio / video — play in-page when the browser can decode the container.
- Text / JSON — UTF-8 decode into the output box.
- Anything else — hex dump + binary download.
- Standards — RFC 4648, Base64URL, MIME wraps, data URIs.
Base64 reader vs Base64 to Image
Use Base64 to Image when you already know it is a picture. Use this Base64 reader / viewer when the paste might be text, PDF, hex, or a data URI—and you want live encode as well. Pair with Verify if the string came from ChatGPT.
Privacy for Europe, USA and worldwide
Decoding never leaves your device. That matches GDPR-minded EU teams and US engineers who refuse to paste production JWTs or Base64 blobs into upload SaaS. After the page loads, you can work offline.
Also useful: Repair Base64, Data URL to image, Strip EXIF after you download a photo.
Preguntas frecuentes
What is a Base64 reader or Base64 viewer?
An online tool that decodes Base64 as you paste and shows the real payload—image, PDF, audio, text or hex—so you can preview before downloading. This one also enlarges the preview and never uploads your string.
Can I enlarge the Base64 image or PDF preview?
Yes. Click Enlarge preview for a fullscreen lightbox with zoom, or Open in new tab. Click the image itself to enlarge quickly.
How do I download the decoded file reliably?
Use Download decoded file or Download file on the preview toolbar. We sniff the type (PNG, JPG, PDF, …) and save with the correct extension and MIME type.
Does it update when I paste?
Yes. “Update as I type / paste” is on by default. Auto mode decodes Base64-looking input and encodes plain text to Base64.
Is this private / GDPR friendly?
Decoding and preview run only in your browser. Nothing is uploaded—suitable for EU and US teams handling tokens, customer data or internal screenshots.
Base64 viewer vs Base64 to Image?
Base64 to Image is specialized for pictures. This reader handles unknown payloads (text, PDF, hex, media) plus live encode and enlarge/download controls.
Comentarios (0)
¿Preguntas, ideas o un error en “Base64 Reader & Viewer Online”? Deja un comentario, valora la herramienta o responde a otros usuarios.
Aún no hay comentarios. ¡Sé el primero en dar tu opinión!