3G2 to WebP Converter

3G2 to WebP — Is WebP the Right Format for a Video Still?

A .3g2 file is video: the 3GPP2 container that CDMA2000 handsets on Verizon, Sprint and similar networks recorded to. This page pulls one frame out of it and writes that frame as a WebP still image — not an animation. The question worth answering before you click anything is whether WebP is the format you actually want for that frame. The short version: if the still is headed for a web page, WebP is the smallest of the three realistic options and is now supported across every major browser. If it is headed for a print job, a document, or somewhere the file has to open without question, PNG or JPG is the safer landing.

WebP vs PNG vs JPG for a Frame Pulled from Video

Our own longer comparison of the three, PNG vs WebP vs JPG: Which Format to Use When, goes into the trade-offs beyond video frames.

When to Pick WebP

• The still is going on a web page: this is what WebP was built for, and the size advantage over JPEG and PNG is real and measured rather than marketing.
• You want small files without giving up alpha: WebP is the only one of the three that carries transparency and lossy compression at the same time, which matters if you plan to cut the subject out of the frame later.
• You are exporting a lot of frames: Multiple Screenshots at a dense capture rate produces a lot of images. At 25–34% smaller each, the difference across a batch adds up quickly.
• You want one format that can go either way: flipping Lossless? to Yes gives you a pixel-exact copy from the same tool, without switching formats.

When to Pick PNG or JPG Instead

• The file has to open anywhere, no questions asked: PNG and JPG have decades of universal support behind them; WebP support outside browsers is good but still occasionally absent in older desktop software.
• You are handing the still to a print shop or a document: print and office pipelines are conservative. 3G2 to JPG is the lower-friction choice there.
• The frame is mostly flat graphics or text overlay: hard edges are where lossless wins, and 3G2 to PNG is the format everything already reads losslessly.
• You will keep re-editing and re-saving it: every lossy save compounds. Work in a lossless format and export to WebP once at the end.

WebP at a Glance

The size and transparency figures above are Google's own, published on the WebP developer site; the browser-support caveat is from MDN's image format guide.

How to Convert 3G2 to WebP

1. Upload Your 3G2 File: Drag and drop the clip onto the page or click "+ Add Files" to browse. .3gp is accepted as well, and several clips can be queued to run with the same settings.
2. Choose the Frame: Keep Specific Frame and type the moment into Time (seconds) — 0 is the opening frame, 2.1 is two and a tenth seconds in — or switch to Multiple Screenshots and set a Capture Rate to sample across the clip.
3. Set Lossless? and the Quality Preset: Lossless? starts on "No (Recommended)" and the Quality Preset on "Very High (Recommended)". Flip Lossless to Yes only for a pixel-exact copy, and leave Image resolution on "Keep original".
4. Convert and Download: Click Convert and save the WebP. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours later — no sign-up, no watermark.

Frequently Asked Questions

Does this produce a still image or an animated WebP?

A still. WebP as a format does support animation through its ANIM and ANMF chunks, but this converter writes single images: Specific Frame gives you one still at the timestamp you enter, and Multiple Screenshots gives you a set of separate still images rather than one looping file. If you want motion out of the clip, 3G2 to GIF produces an animation instead.

Should I turn Lossless on?

Usually not, for a frame off a phone camera. Lossy WebP at the "Very High" preset is very hard to distinguish from the decoded frame while being substantially smaller — Google measures lossy WebP at 25–34% smaller than a comparable JPEG, and JPEG is already smaller than PNG. Our converter starts with Lossless? on "No (Recommended)" and the Quality Preset on "Very High (Recommended)" for exactly that reason. Turn Lossless on when the frame contains flat graphics, text or a screen capture, where lossy coding shows its artefacts most clearly.

Will a WebP still be smaller than the PNG or JPG version of the same frame?

Almost always, though the margin depends on the content. Google's published figures are 25–34% smaller than a comparable JPEG at equivalent SSIM for the lossy mode, and 26% smaller than PNG for the lossless mode. On a small, heavily-compressed phone frame all three formats produce a modest file to begin with, so the practical saving is measured in kilobytes rather than megabytes — it matters most when you are exporting many frames at once.

Why does my extracted frame look low-resolution?

Because the source is. 3GPP2 defined the 3G2 file format for CDMA2000 handsets where storage was tight and the network was slow, so clips were captured at frame sizes like QCIF (176x144) or QVGA (320x240) and compressed hard. WebP faithfully encodes whatever the video decoder produced; no image format adds detail that was never recorded. Leave Image resolution on "Keep original" — scaling up enlarges the softness rather than removing it.

Can I get a WebP with a transparent background from a video frame?

Not from the video itself. WebP supports alpha in both its lossy and lossless modes, but video frames are fully opaque, so there is nothing transparent to preserve — the alpha capability only becomes useful once you edit the still and cut something out. That is a genuine reason to choose WebP over JPG here: it can hold the transparency you add later, and JPG cannot.

Will the WebP open on older machines and in desktop software?

In browsers, yes — Chrome, Edge, Firefox, Opera and Safari all handle WebP, with the caveat that macOS needs Safari 14 or later on Big Sur (11) or newer. Outside the browser is where gaps remain: some older image editors, office suites and print utilities still do not read it. If the recipient is unknown or the file is going into a legacy workflow, PNG or JPG removes the risk, and WebP to PNG converts back if you find out too late.

How do I land on an exact moment rather than a random frame?

Use Specific Frame and type the timestamp into Time (seconds) as a decimal offset from the start of the clip — it is a time, not a frame index, so you never need to know the frame rate the handset recorded at. 2.1 means two seconds and one tenth. If you are hunting rather than targeting, run Multiple Screenshots first at a dense Capture Rate, find the frame you want, then re-run with Specific Frame at that time for a single clean export.

How are my uploaded 3G2 files handled?

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public. If it turns out you wanted the whole clip rather than a still, convert it with 3G2 to MP4 for something that plays on essentially any current device.