WebP to 3G2 Converter

How to Convert WebP to 3G2 Online

1. Upload Your WebP Files: Drag and drop or click "Add Files" to select one or more WebP images. Animated WebP and static WebP both work, as do PNGs or JPGs mixed in the same batch. Multiple images can be merged into a single 3G2 slideshow or output as one 3G2 per image.
2. Pick Merge Strategy and Duration: Choose "Merge images" to combine multiple WebPs into a single 3G2 slideshow, or "Video per image" to get one 3G2 file per source. Set Duration (how long each frame is shown — 1/60 second up to 10 seconds, default 5 seconds), pick a Background Color for any letterboxing, and select a Quality Preset (Lowest → Highest, default Very High).
3. Set Resolution (Optional): Keep original WebP dimensions or pick a Fixed Resolution preset. 3G2 was designed for sub-VGA mobile screens, so 176×144 (QCIF), 320×240 (QVGA), or 352×288 (CIF) match real CDMA handset playback. Larger resolutions like 480p or 720p work but defeat the format's bandwidth-saving purpose.
4. Convert and Download: Click Convert. Files process in your browser session — no sign-up, no watermark, no upload to a third-party server. Each 3G2 downloads individually or as a ZIP for batches.

Why Convert WebP to 3G2?

WebP is Google's modern image format (launched 2010, animated support added 2011), efficient and widely supported on the web — but it's a still-image format that won't play in a video container. 3G2 is the 3GPP2 multimedia container, standardized in January 2004 for CDMA2000 mobile phones, with video in H.263 / MPEG-4 Part 2 / H.264 and audio in AMR, AAC-LC, QCELP, EVRC, or SMV. Converting WebP → 3G2 wraps an image (or a sequence of images) as a tiny mobile-video file. The conversion is niche today because US CDMA networks finished sunsetting in 2022 — but the format still has legitimate uses:

• Playback on legacy CDMA handsets and feature phones — Verizon's CDMA network ran until December 31, 2022; Sprint's until March 31, 2022. Many handsets from that era still power on and play locally stored 3G2 files even though they can no longer make calls.
• Forensics, archival, and litigation evidence handling — 3G2 files from old MMS messages, voicemail attachments, and law-enforcement evidence sets need to round-trip through modern formats and back without losing the original container signature.
• Embedded systems and automotive head units from the 2005-2015 era — older car infotainment, in-flight entertainment, and museum kiosks shipped with hardware decoders that accept 3G2 / 3GP but not modern containers.
• Multimedia messaging on networks that still use MMS — MMS gateways in some regions (Latin America, parts of Asia-Pacific) still default to 3GP / 3G2 because of historical handset compatibility, even where 4G / 5G is the underlying transport.
• Smallest-possible "video from a still" deliverables — a 5-second 3G2 slideshow at QCIF can land under 50 KB. Useful for low-bandwidth embedding or as a placeholder asset.

WebP vs 3G2 — What You're Trading

Resolution and Duration Guide for 3G2

For per-frame duration, 3-5 seconds reads cleanly for a slideshow; 1/24 or 1/30 second per frame turns a stack of WebPs into a real-motion video.

Frequently Asked Questions

Why would I convert to 3G2 in 2026 if CDMA networks are dead?

Network shutdown doesn't brick the file format. US carriers (Verizon Dec 31 2022, Sprint Mar 31 2022, AT&T Feb 2022 for 3G UMTS) retired the CDMA radio, but 3G2 files still play on the handset's local storage, on PC players like VLC and MX Player, and on hardware decoders in older cars and kiosks. The format also still appears in legal-discovery archives, voicemail exports, and MMS pipelines in regions where the gateway hasn't been modernized.

What's the difference between 3G2 and 3GP?

Both are ISO base media containers (MP4 family) and share H.263 / MPEG-4 Part 2 / H.264 video. 3GP was standardized in April 2003 by 3GPP for GSM-based phones; 3G2 was standardized January 2004 by 3GPP2 for CDMA2000. The big difference is audio: 3G2 adds CDMA-specific voice codecs — QCELP, EVRC, SMV, and VMR-WB — which 3GP doesn't carry. MIME types differ too: 3G2 is video/3gpp2, 3GP is video/3gpp. If your target device is a Verizon / Sprint-era CDMA phone, use 3G2. For an old GSM handset (T-Mobile, AT&T pre-LTE, most international), use WebP to 3GP.

Will my animated WebP keep all its frames?

Yes — animated WebP frames are decoded individually, then encoded into the 3G2 video stream at the frame rate implied by your Duration setting. A WebP with 24 frames played at "1/24 second per frame" produces a 1-second 3G2 clip; the same source at "5 seconds per frame" produces a 2-minute slideshow. Picking a Duration shorter than 1/8 second is what you want for true motion video; longer Durations make a slideshow.

What resolution should I pick for real CDMA handset playback?

176×144 (QCIF) for 2003-2007 phones, 320×240 (QVGA) for late-2000s smartphones, 352×288 (CIF) as the safe upper bound. Past CIF you're trusting the decoder to handle out-of-spec resolutions — modern PC players will, but a 2008 Verizon flip phone usually won't. If you don't know the target device, 320×240 is the universally-safe pick.

Does the 3G2 file have audio?

By default, when converting from a silent source (which WebP always is — the format has no audio), XConvert writes the 3G2 with a silent audio track or no audio track depending on the merge mode. If you need narration over the slideshow, convert the WebPs to a video first and merge an audio file separately, or use a tool that supports muxing an MP3 / AMR track during conversion.

Can I batch-convert a folder of WebPs into one 3G2 slideshow?

Yes. Upload all the WebPs in one go and pick "Merge images" — XConvert concatenates them in upload order, each shown for the Duration you set. Use "Video per image" if you instead want one 3G2 per source WebP (useful if you're sending different clips to different recipients).

Why is my output 3G2 file so small (or so large)?

3G2 with H.263 at QCIF/QVGA is genuinely tiny — a 5-second clip can land under 100 KB. If your output is unexpectedly large, you probably picked a 720p+ resolution preset, which defeats the format's bandwidth-saving design. Drop to QVGA or CIF and the file will shrink 10-20×. If the file is too small and looks blocky, raise the Quality Preset from Low / Very Low up to High or Very High.

Will modern phones (iPhone, Android) play the 3G2 file?

Not natively in the default video apps. iPhone's Photos / Files apps don't recognize 3G2; Android's stock gallery is hit-or-miss. Install VLC, MX Player, or nPlayer and 3G2 plays fine. For a file you can share with anyone on any phone, convert to MP4 instead: WebP to MP4 is the modern equivalent and plays everywhere without a third-party app.

Can I convert other image formats to 3G2 the same way?

Yes — JPG, PNG, BMP, GIF, HEIC, TIFF, and AVIF all work. See JPG to 3G2 and PNG to 3G2 for those specifically. The merge / duration / resolution controls behave identically. For going the other direction (3G2 → modern video), use 3G2 to MP4.