Client-side by default
Your image is read from your device and encoded in the browser tab. Pix-8 never receives your pixel data during encoding or copy.
Online · Client-side · No upload
Base64 encode image — data URLs in the browser
Base64 encode image files in your browser — no upload, no account, no cloud queue. Load a local PNG, JPEG, WebP, or GIF, generate a copy-ready Base64 string with an optional data URL prefix, and embed it in CSS or HTML — all encoded on-device without sending your file to a server.
Encode images — Free
No upload · No server · Copy-ready output
What this tool does
- Load image files locally from your device
- Generate Base64 strings with optional data URL prefix
- Copy output ready for CSS, HTML, or email templates
- Character and byte size readout for the encoded output
- On-device processing — images never uploaded to a server
Image file to Base64 string — on-device
Pix-8 Base64 Encoder reads your image file locally and produces a Base64 string in the browser — not a remote converter that ingests uploads first. Toggle the data URL prefix, review character and byte size, then copy in one step. It does not batch-encode folders, resize images before encoding, or decode Base64 back to files.
Why Base64 encode images in the browser?
Cloud converters route every image through a remote server before you can copy a string. Pix-8 processes locally — the direct fit when you need to Base64 encode image files for inline CSS, HTML img src, or email templates without moving assets off-device.
Data URL ready
Optional data:image/…;base64, prefix outputs a string formatted for inline CSS background-image or HTML img src — or copy raw Base64 only.
Size before you paste
Character and byte readout helps you judge whether the encoded string fits your use case before embedding icons or small graphics in production code.
How it works
Step 1
Open Base64 Encoder
Navigate to Pix-8 Base64 Encoder in your browser — no install, no account, and no upload dialog before you encode.
Step 2
Load your image file
Choose a PNG, JPEG, WebP, or GIF from your device. The browser reads the file on-device and converts it to a Base64 string.
Step 3
Copy the encoded output
Review character and byte size, toggle the data URL prefix if needed, then copy the string — ready for CSS, HTML, or email.
Frequently asked questions
Can I Base64 encode an image without uploading it to a server?
Yes. Pix-8 Base64 Encoder runs entirely in your browser. Your image file is read locally via the FileReader API, encoded on-device, and displayed as a copy-ready string. It is never transmitted to Pix-8 or any third-party server.
What image formats can I Base64 encode?
Base64 Encoder accepts image files from your device — typically PNG, JPEG, WebP, or GIF. The browser reads the file and outputs a Base64 string with an optional data:image/…;base64, prefix. It does not batch-encode folders, encode plain text, decode Base64 back to images, or convert video files.
Can I copy a data URL ready for CSS or HTML?
Yes. Toggle the optional data URL prefix to output data:image/…;base64,… for inline CSS background-image or HTML img src attributes. Character and byte size are shown before you copy. One-click copy when the output is ready.
Related use cases
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URL-safe Base64 encoder
Standard Base64 for images on-device — not Base64url (-/_) output.
Ready to Base64 encode an image?
Open Base64 Encoder, load a local file, and copy your string — privately, entirely on-device.
Open Base64 Encoder
Client-side processing only — your image never leaves the browser.