Is the PNG to WEBP converter free?

Yes. Transcodr is free with no accounts, watermarks, or hard limits beyond your device's available memory.

Are my files uploaded to a server?

No. The conversion runs locally via ffmpeg compiled to WebAssembly, so your PNG file never leaves the browser tab.

Is transparency preserved?

Yes — WEBP supports an alpha channel, so transparent areas in your PNG stay transparent.

How do I convert PNG to WEBP?

Drop your PNG file above (or click Browse) — the output is already preset to WEBP — then click Convert and download the result.

PNG → WEBP · On-device · No upload

Convert PNG to WEBP

Convert PNG to WEBP in seconds, free and entirely in your browser. PNG is a lossless image format with full transparency support; WebP is Google's modern image format with noticeably smaller files. Transcodr runs real ffmpeg compiled to WebAssembly, so your file is processed on your own device and never uploaded.

Drop files to convert

Video, audio, images, subtitles: anything ffmpeg can read. Drop them anywhere on the page or browse from disk.

Try a sample:

Session record(0)

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Time	From		To	Size	Δ	Duration
When you convert something, it’ll appear here. Clears on tab close — we don’t keep records.

PNG vs WEBP

Property	PNG	WEBP
Compression	Lossless	Lossy or lossless
Transparency	Yes	Yes
Compatibility	Universal	Modern browsers

PNG → WEBP questions

Is the PNG to WEBP converter free?: Yes. Transcodr is free with no accounts, watermarks, or hard limits beyond your device's available memory.
Are my files uploaded to a server?: No. The conversion runs locally via ffmpeg compiled to WebAssembly, so your PNG file never leaves the browser tab.
Is transparency preserved?: Yes — WEBP supports an alpha channel, so transparent areas in your PNG stay transparent.
How do I convert PNG to WEBP?: Drop your PNG file above (or click Browse) — the output is already preset to WEBP — then click Convert and download the result.

01 / Engine

Real ffmpeg, compiled to WebAssembly.

Same library Netflix, YouTube, and basically every command-line video tool relies on, running in a Web Worker. Pipe a file in, run a command, pipe bytes back out.

02 / Privacy

Nothing leaves the tab.

No uploads, no accounts, no telemetry beyond an anonymous pageview. We couldn’t see your files if we wanted to — there’s no server in the loop.

03 / Limits

It is, after all, a tab.

Files up to a few hundred megabytes convert comfortably. Beyond that, your browser starts asking pointed questions. Use the desktop ffmpeg for 4K masters.

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