About BASE64IMAGE

Who Built This?

BASE64IMAGE was built by Shees Zubair, a web developer who kept reaching for Base64 tools while working on real projects — encoding images for CSS sprites, debugging API payloads containing Base64 strings, converting images for email clients that strip external resources. Most existing tools were either ad-heavy, required sign-ups, or quietly uploaded your data to a server. So this was built from scratch to do the job cleanly.

The site launched in 2024 and has grown from 4 tools to 40+ covering every common Base64 workflow: encoding, decoding, format conversion, validation, language-specific guides, and educational content. Questions or feedback? Reach out directly at sheeszubair@gmail.com or via the contact page.

How Does the Client-Side Processing Actually Work?

Every tool on this site uses native browser APIs — no server round-trips, no third-party processing services. Here is exactly what happens when you use each tool type:

• Image encoding: Files are read with the FileReader API into an ArrayBuffer, then converted to Base64 using btoa() or the Buffer equivalent for binary safety.
• Image decoding: The Base64 string is decoded with atob(), written into a Uint8Array, wrapped in a Blob with the correct MIME type, and rendered via URL.createObjectURL().
• Format conversion (PNG, JPEG, WebP): Decoded image data is painted onto an off-screen Canvas element, then re-exported using canvas.toDataURL('image/png') or equivalent.
• Validation: Character-set regex (/^[A-Za-z0-9+/]*={0,2}$/) plus length-mod-4 checks run synchronously in the browser.
• Downloads: A temporary Blob URL is created, a hidden <a> element is clicked programmatically, then the URL is immediately revoked.

No image data, Base64 string, or file name is sent to BASE64IMAGE's servers at any point. The only network requests are the initial page load (HTML, CSS, JS assets) and Google Analytics page-view events (which never have access to your tool input data).

What Tools Are Available?

Encoders

• Base64 Image Encoder — Convert any image to a Base64 string
• Base64 Text Encoder — Encode plain text to Base64
• Base64 File Encoder — Encode any file type
• Base64 URL-Safe Encoder — RFC 4648 URL-safe variant (+/ replaced with -_)

Decoders

• Base64 Image Decoder — Decode Base64 strings back to images
• Base64 Text Decoder — Decode Base64 to plain text
• Base64 File Decoder — Decode Base64 to any file type

Converters

• Base64 to PNG, Base64 to JPEG, Base64 to WebP, Base64 to GIF, Base64 to SVG
• PNG to Base64, JPEG to Base64, SVG to Base64
• Base64 to PDF, Base64 ↔ Hex

Tools

• Base64 Validator — Check if a string is valid Base64
• Size Calculator — Calculate encoded vs. decoded sizes
• Bulk Converter — Process multiple images at once
• Embed Generator — Generate ready-to-paste HTML/CSS embed code
• Base32 Encoder / Decoder
• ASCII to Base64 Converter

Learn

• What is Base64? — Complete guide to the encoding format
• Base64 Algorithm Explained — How the bit-splitting works
• Character Table — Full 64-character reference
• Data URI Guide — Syntax, browser limits, MIME types
• Base64 vs Binary — When to use each

Developer Guides

• JavaScript, Python, Java, PHP, C#, Go

Why Is Everything Free?

BASE64IMAGE doesn't have a business model that requires monetising your data. The site has no paywalls, no premium tiers, and no account system. Running a static site on a CDN is cheap enough that it doesn't need to be. The tools exist because they are useful — the same reason most developer tools get built.

Privacy Commitment — Specific and Verifiable

"Privacy-first" is a claim many sites make. Here is what it means concretely on BASE64IMAGE:

• No image or Base64 data is transmitted. The network tab in browser DevTools will show zero POST requests or data uploads when using any tool.
• No cookies are set by the site itself. Google Analytics sets its own cookies for session tracking; the site does not.
• No account is required. There is no login, registration, or email capture anywhere on the site.
• Blob URLs are revoked after use. Temporary object URLs created for downloads are cleaned up immediately after the download is triggered.

For full details, see the Privacy Policy.

Technology Stack

BASE64IMAGE is intentionally minimal:

• Static HTML/CSS/JS — no server-side framework, no build pipeline
• Alpine.js v3 (CDN) — lightweight reactivity for interactive tool state
• Font Awesome 6.5.1 (CDN) — icons
• Native browser APIs — FileReader, Canvas, Blob, btoa/atob for all encoding operations
• Nginx on Docker — static file serving with gzip, security headers, and clean URL rewrites
• Deployed via Coolify — self-hosted PaaS on a VPS