Encoding stays in the tab
Your image file is read and converted via the FileReader API in your browser. Pix-8 never receives your pixel data during encoding or copy.
Client-side · No upload · Private
Client-side Base64 encoder — image encoding in the browser
Use a client-side Base64 encoder in your browser — no upload, no account, no cloud queue. Load a local image file, and the FileReader API encodes it on-device to a copy-ready Base64 string with an optional data URL prefix — ready for CSS, HTML, or email without sending pixel data to a remote server.
Encode images — Free
No upload · No server · Browser-native
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
Browser-native encoding — not a cloud converter
Pix-8 Base64 Encoder reads your image file locally and outputs a Base64 string in the browser tab — not a hosted service 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, decode Base64, or encode plain text.
Why use a client-side Base64 encoder?
Cloud Base64 tools route every file through a remote server before you can copy a string. Pix-8 keeps encoding in the browser — the direct fit when you need a client-side Base64 encoder for inline icons, logos, and small graphics without exposing source files to a remote encoder.
Copy-ready data URLs
Optional data:image/…;base64, prefix outputs strings formatted for CSS background-image or HTML img src — one-click copy when ready.
Size before you paste
Character and byte readout helps you judge whether an inline Base64 asset fits your stylesheet or HTML before you commit to the payload.
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 encoding.
Step 2
Load an image locally
Choose a PNG, JPEG, WebP, or GIF from your device. The browser reads the file on-device and encodes it to Base64 via FileReader.
Step 3
Copy the encoded string
Review character and byte size, toggle the data URL prefix if needed, then copy — ready for CSS, HTML, or email.
Frequently asked questions
What does client-side mean for this Base64 encoder?
Client-side means Pix-8 Base64 Encoder reads your image file and produces a Base64 string entirely in your browser tab — via the FileReader API on your device. Encoding and copy run locally. Your pixel data is not transmitted to Pix-8 or any third-party server during use.
Does a client-side Base64 encoder upload my images?
No. Pix-8 Base64 Encoder runs entirely in your browser. Your image file is read locally, encoded on-device, and displayed as a copy-ready string. There is no server upload step, and Pix-8 does not receive your image data.
What can this client-side encoder convert to Base64?
Base64 Encoder converts one image file per session — typically PNG, JPEG, WebP, or GIF — into a Base64 string with an optional data:image/…;base64, prefix. Character and byte size are shown before you copy. It does not batch-encode folders, encode plain text, decode Base64 back to images, or convert video files.
Related use cases
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URL-safe Base64 encoder
Standard Base64 for images on-device — not Base64url (-/_) output.
Ready to encode images client-side?
Open Base64 Encoder, load a local file, and copy your string — privately, entirely in the browser.
Open Base64 Encoder
Client-side processing only — your image never leaves the browser.