ConvertCapConvert a file

ConvertCap vs CloudConvert

Same 1-second clip, same 10 MB cap, same image size. ConvertCap keeps the motion smooth and the gradient clean; CloudConvert stutters and fills it with a grid of squares.

Convert a file — free

Why ConvertCap instead of CloudConvert?

CloudConvert is a general-purpose converter. For video, its GIF export exposes frame size, frame rate and trim — no quality setting and no target size. You are the optimizer.

ConvertCap starts from the target size. It searches resolution, frame rate, palette and dithering for you. It spends the bytes where they buy the most visible quality, then stops.

The 10 MB test

Source: a 1-second hummingbird clip, 2764×1554, 30 fps, 31 frames. Both tools converted it with a 10 MB cap. Both outputs are 2764×1554.

Visual proof
ConvertCap (Gifski Engine)
CloudConvert
1:1 detail100% zoom
100% crop of the ConvertCap GIF background at native pixels: a smooth green gradient with no visible dither grid. A red circle marks the same spot as the CloudConvert crop and is labelled smooth.
100% crop of the CloudConvert GIF background at native pixels: a regular crosshatch of olive and blue-grey squares, the visible ordered-dither grid, circled in red and labelled square.
Resolution & Area
ConvertCap2764 × 1554 px (4.30 MP)
CloudConvert2764 × 1554 px (4.30 MP)
Motion & Smoothness
ConvertCap25 FPS — 26 of 31 source frames (84% kept)
CloudConvert16 FPS — 18 of 31 source frames (58% kept)
Color Palette
ConvertCapAdaptive 256-color palette (256 used in frame 0)
CloudConvertFixed RGB332 cube (105 used in frame 0)
Dithering & Artifacts
ConvertCapNo dither grid
CloudConvert8×8 ordered (Bayer) dither — visible crosshatch
Byte Budget Used
ConvertCap9.98 MB — 99.8% used; 0.02 MB left unused
CloudConvert9.72 MB — 97.2% used; 0.28 MB (2.8%) wasted
Creator Effort
ConvertCapType 10 MB, one click
CloudConvertManual width / fps / trim, then retry

1:1 crops of the same region at native pixels.

What differs

  1. 1. Frame rate

    CloudConvert kept 18 frames at 16 fps. ConvertCap kept 26 frames at 25 fps. The files are almost identical (9.72 MB vs 9.98 MB), so this is not a bandwidth miracle — it is a different answer to the same budget. At 16 fps the head turn looks like it is stuttering; at 25 fps it reads as motion.

  2. 2. Palette and dithering

    CloudConvert mapped every pixel to a fixed RGB332 palette — 3 bits of red, 3 of green, 2 of blue — then used an 8×8 Bayer dither to fill in gradients that palette cannot hold. That is the crosshatch of little squares and the cool blue-grey speckle in the 1:1 crop. ConvertCap used an adaptive 256-color palette and no dither grid.

  3. 3. One click, not a settings lottery

    You resize, convert, download, check the size, and start again when it misses — that is the loop. ConvertCap takes the one number you actually know — 10 MB — and solves for the rest. Type 10 MB, hit Start, done.

When CloudConvert makes sense

CloudConvert is fast, handles many formats, and is fine for a quick throwaway GIF where size and quality do not matter.

ConvertCap is focused: a tool for when the file has to fit a cap and still look good.

FAQ

Is ConvertCap free?
Yes. 3 files without an account, 5 per day with a free account.
What formats can I export?
GIF, WebP, AVIF, PNG, MP4, WebM, and MOV. You can also assemble PNG/WebP image sequences or trim clips in the same place.
Does ConvertCap always avoid dithering?
No. Dithering is sometimes the best way to spend a small budget. What matters is choosing it for the image and the cap, not applying one fixed grid to every frame. In this test the adaptive palette was enough.

Convert GIF, WebP, AVIF and MP4 to an exact size cap.

Free. No watermark. 5 conversions a day.

Convert a file