skwish
private
browser-based
Reduce thumbnail file size for YouTube
YouTube limits custom thumbnails to 2MB. Skwish reduces your thumbnail file size locally in the browser — drag in an oversized thumbnail and download a YouTube-ready version in seconds.
Search match

This page is tuned for reduce thumbnail file size so visitors land in the right workflow immediately.

Fast output

See original size, compressed size, and percentage saved before you move on.

Batch ready

Compress multiple files and pull the results down as a ZIP.

Get to the compressor fast
Exact-intent SEO page first. Clear next step. Pretty later.

People usually search for a specific task, not a brand story. So this page keeps the promise simple: compress images without sending them to a third-party server.

Built for people searching “reduce thumbnail file size”, not a generic landing page.

No uploads, no accounts, no waiting on a server.

See the savings before you download anything.

Batch export stays available when the job is bigger.

Best for this search

Quickly shrink a single thumbnail that YouTube rejected as too large — drop it into Skwish, adjust quality, and download a version under 2MB.
Reduce file sizes for a batch of video thumbnails before a scheduled publishing day so you can upload them all at once without hitting size limits.
Compress high-resolution thumbnail exports from design tools that default to maximum quality and unnecessarily large file sizes.
Compress images now

Opens the upload box on the free browser compressor.

Drop images in the browser
Keep the whole workflow local. Nothing leaves your device unless you download it.
Set the output you need
Adjust compression until the file size and quality fit the job instead of guessing.
Download a clean result
Save one file or a ZIP bundle with skwish-prefixed names so the output is easy to find.
Getting thumbnails under YouTube's 2MB limit
Use these before you upload or share the page.
The fastest way to reduce file size is to resize to 1280x720px first — a 4000px-wide thumbnail at 100% quality will always be over 2MB regardless of compression.
JPEG at 70% quality typically lands a 1280x720 thumbnail under 300KB — well within the 2MB limit with room for YouTube's own processing overhead.
If you need maximum quality for a thumbnail with fine text or logos, try PNG at reduced dimensions — PNG handles sharp edges better than JPEG at low quality settings.

Ready to compress images?

Open the free browser upload box, keep files local, and download the optimized result.

Compress images now
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