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Batch Resizer for Ads
Batch Resizer for Ads generates the exact creative dimensions social platforms expect — YouTube thumbnails, Facebook and Instagram feed or story sizes, TikTok video frames and more — from one source image, in a single run.
How to use Batch Resizer for Ads
- Upload the source creative you want adapted.
- Tick the platform placements you need.
- Generate the set and download each correctly sized asset.
Where Batch Resizer for Ads is useful
- Producing a campaign's asset set from one master design.
- Filling a client request for every common ad size at once.
- Adding thumbnail and story variants to an existing creative.
Formats, algorithms and limits
Each placement has a defined pixel size; your image is scaled with contain, cover or stretch behaviour depending on the fit mode you choose. Cover crops the overhanging edges to fill the frame exactly, contain keeps the whole picture with letterboxing, and stretch forces the image to the frame — which distorts it.
Troubleshooting and honest limits
- Use cover for photographic creatives so the frame fills edge to edge without distortion.
- Keep critical content away from the edges: cover crops rely on a safe area in the middle of the image.
- Avoid stretch unless the original already matches the target ratio.
Frequently asked questions
Which sizes are included?
The common placements across YouTube, Facebook, Instagram and TikTok, covering feed, story and video thumbnail formats, plus a custom size option.
What do contain, cover and stretch mean?
Contain fits the whole image inside the frame with borders, cover fills the frame completely and crops the excess, and stretch distorts the image to match the frame exactly.
Does resizing for ads reduce quality?
Downscaling to ad sizes is a lossless-quality operation for the kept pixels; each output is re-encoded once at the target dimensions.
Can I process multiple creatives at once?
Yes — queue several source images and each one is expanded into the full set of selected sizes.
Related tools
Page written and reviewed by the FreeConvertio engineering team on 2026-10-14. Batch Resizer for Ads runs entirely in your browser — no uploads, no account and no daily limits.