XCF to 3GP

How to Convert XCF to 3GP Online

1. Upload Your XCF Files: Drag and drop, or click "+ Add Files" to select one or more GIMP project files. Flatten layered projects in GIMP first (Image → Flatten Image, then re-save the .xcf) — a multi-layer XCF is read as a multi-page image and a single layer is written to the frame, not the merged canvas. Batch upload is supported — drop several files in at once for a single slideshow output or one 3GP per image.
2. Pick Merge Strategy and Image Duration: Under "Merge strategy," choose "Merge images" to combine all uploads into one slideshow video, or "Video per image" for one 3GP per file. Under "Image Duration," set how long each frame displays — defaults to 5 seconds per frame, with options from 1 second up to 10 seconds.
3. Set Resolution and Background Color (Optional): Under "Video resolution," keep original, choose a preset like 320×240 or 176×144 (standard 3GP sizes), or enter exact width/height. Pick a "Background Color" (White is default) for letterbox bars when your XCF aspect ratio doesn't match the chosen video resolution.
4. Tune Compression and Convert: Under "File Compression," choose Quality Preset (Highest to Lowest), Target file size as a percentage, an exact target size, Constant Bitrate, Variable Bitrate, Constant Quality (CRF for H.264/H.265), or Constraint Quality. Click "Convert" — files process on our servers, no sign-up, no watermark.

Why Convert XCF to 3GP?

XCF is the native layered project format of GIMP — introduced with GIMP 0.99.16 in December 1997 — and stores layers, masks, paths, channels, guides, and selection state. No video player or messaging app reads XCF directly. 3GP is a 3GPP-defined multimedia container (initial release April 2003), structurally based on the ISO base media file format (ISO/IEC 14496-12) and designed for low-bandwidth mobile delivery. Converting XCF to 3GP turns a static GIMP composition into a small, self-contained video clip suited for legacy phones, low-bitrate playback, and constrained-bandwidth distribution.

• MMS-ready clips for legacy handsets — Carrier MMS gateways and feature phones still expect 3GP at 176×144 (QCIF) or 128×96 (SQCIF). A flattened XCF rendered as a 3-to-5-second 3GP clip lands well under typical 300 KB MMS payload caps.
• Education kits in low-bandwidth regions — Field-distributed training material on basic phones (Nokia 105 / 110 4G classes, KaiOS handsets) plays 3GP natively but won't decode modern WebM or HEVC. A GIMP storyboard exported to 3GP is the smallest practical animated handout.
• Surveillance and embedded device playback — Older IP cameras, intercoms, and industrial HMIs that stream H.263 in 3GP can replay GIMP-designed signage clips without a transcoder in the loop.
• Voice memo / amateur radio video logs — AMR-NB at 12.2 kbps inside a 3GP container keeps a narrated GIMP infographic under 200 KB per minute, useful for HF/VHF digital data modes that have strict size budgets.
• Forensic and archival reconstructions — Reproducing what a user saw on a 2005-era handset (court evidence, accessibility audits, media-history projects) requires the original 3GP profile, not a re-encoded MP4.
• MMS-style social posts on retro communities — Forums and Discord servers dedicated to feature-phone collecting expect actual 3GP files, not MP4 dressed up with a .3gp extension.

XCF vs 3GP — Format Comparison

Resolution & Compression Quick Guide

Frequently Asked Questions

What happens to my GIMP layers when I convert XCF to 3GP?

They are dropped, and not merged first — this is the one thing to know before converting. A .xcf with several layers reaches the converter as a multi-page image and a single layer is written as the video frame, rather than the composite GIMP shows on canvas. Everything the other layers painted is missing, and the regions they covered come through transparent — which, since 3GP video has no alpha channel, means they fall back to the Background Color (White by default). The fix is one menu item: in GIMP choose Image → Flatten Image, re-save the .xcf, and upload that; the frame then matches your canvas exactly. A project that is already a single layer converts correctly as-is. If you want each layer as its own video frame, export them separately from GIMP (File → Export As → PNG sequence) and upload that sequence with "Merge images" selected.

What resolution should I pick — 176×144, 320×240, or 352×288?

For MMS to feature phones, 176×144 (QCIF) is the historically safest target. 320×240 plays on most early-2000s smartphones and still fits the 3GP profile. 352×288 (CIF) is the upper end of what classic 3GP decoders accept; some handsets reject it. If you're uncertain about the target device, 320×240 is the best middle ground.

Why is my 3GP file rejected by my carrier's MMS gateway?

MMS gateways enforce per-message size caps (often 300 KB to 1.5 MB depending on the carrier and plan) and per-file duration caps. Use the "Specific file size" compression mode and set a target under your carrier's published MMS limit, drop image duration to 2-3 seconds, and choose 176×144 resolution. Some carriers also strip or repack 3GP that uses MPEG-4 Part 2; sticking to H.263 video + AMR-NB audio profiles is the most compatible.

Should I convert XCF to 3GP or to MP4 instead?

3GP only if you need playback on legacy hardware, an MMS-style messaging path, or an explicit 3GPP-compliant deliverable. For modern phones, browsers, social media, and any device built after roughly 2015, XCF to MP4 gives a far better quality-per-byte ratio thanks to H.264/H.265. iOS 9 and later removed automatic 3GP playback from Safari, so 3GP is genuinely a legacy target now.

Can I add a soundtrack or narration to the 3GP?

The XCF-to-3GP path produces a video-only output by default — there's no audio source in a GIMP project. If you need a soundtrack, convert to MP4 first and use a separate tool to add audio, or convert your finished 3GP using 3GP to MP4 and remux audio there. 3GP supports AMR-NB and AAC-LC for audio when an audio source is provided.

What's the difference between Constant Bitrate, Variable Bitrate, and Constant Quality?

Constant Bitrate (CBR) holds the data rate steady — predictable file size, but quality fluctuates on complex frames. Variable Bitrate (VBR) lets the encoder spend more bits on detailed frames and fewer on simple ones, giving better quality at the same average size. Constant Quality (CRF) targets a perceived quality level (lower CRF = higher quality, higher file size); CRF 23 is a common default, CRF 28 trims size noticeably. For 3GP delivered to feature phones, CBR around 64-128 kbps is the most predictable.

My XCF has transparency — what happens to it in the 3GP?

3GP video has no alpha channel, so transparent regions of your XCF are filled with the "Background Color" you select (White by default). If your design relies on transparency over a specific backdrop, set the Background Color to match that backdrop before converting, or flatten the XCF in GIMP onto your intended background and re-upload.

Will the converter open .xcf.gz or .xcf.bz2 files?

GIMP can save XCF as .xcf, .xcf.gz, or .xcf.bz2 (gzip- or bzip2-compressed XCFs). The accepted extension here is .xcf only — if you have .xcf.gz, decompress it locally first (gunzip file.xcf.gz) or open it in GIMP and re-save as plain .xcf. The flattened raster output is identical either way.

Is there a file size limit?

xconvert processes files on our servers, so the practical limit is upload size and connection speed. XCF files with many layers at high resolution (4K+ multi-layer compositions) take longer to upload and decode than typical photo-sized projects. If conversion stalls on a very large XCF, flatten it in GIMP first (Image → Flatten Image, then re-save), which usually shrinks the file substantially.