Resize PNG online for free

Resize PNG by pixels online

Set your PNG to exact pixels, lock the aspect ratio so nothing stretches, or pick a ready-made preset like an Instagram story or a YouTube thumbnail.

Enter exact pixel width and height, or lock aspect ratio while changing one dimension. Resizing before compress often helps hit tight KB targets because fewer pixels mean fewer bytes.

When resizing solves upload errors

Resize when the rejection mentions pixels, dimensions, or aspect ratio, not only file size.

• Portal says image must be 600×600 px but your camera export is 4032×3024
• Email signature templates with fixed image slots
• Web performance: smaller dimensions plus compress for faster page loads
• Print workflows combined with DPI metadata on supported formats

Resize plus compress in one pass

Many forms specify both pixels and KB. Resize alone may not be enough; compress alone may destroy quality if dimensions stay huge. Enable both toggles here.

Order is handled automatically: convert first if needed, then resize, then compress to your KB band.

Choosing pixel dimensions for PNG

Start from the portal spec. If it says 600×600, enter those numbers with aspect lock on unless cropping is allowed.

• Downscale camera photos before compressing to tight KB targets
• Keep aspect lock on for profile photos unless the form shows a fixed crop box
• SVG and PDF resize behaves differently from photos; check preview after download

Social and form upload dimensions

Not sure which preset to pick? These are the pixel boxes FilezyAI uses in the Resize menu — sourced from each platform's public creator docs, not copied from third-party blogs.

Common resize mistakes

• Upscale a small image to meet pixel requirements (results look soft; start from a higher-resolution source)
• Disable aspect lock and stretch faces wider than the platform allows
• Resize on one site and compress on another (double JPG encode)

Why FilezyAI runs multiple steps together

Most free converters handle one job per visit: format change, or a vague quality slider, or a crop tool on another tab. Portals rarely ask for just one of those — they publish a checklist (JPG, under 200 KB, 600×600 px, named photo.jpg). FilezyAI applies every toggle you enable in a single server job.

Uploads are removed automatically two hours later. No account is required on the free tier. Pro removes ads and raises file-size limits.

• Set min/max KB instead of guessing compression percentage
• Chain convert, compress, resize, rename, and metadata removal before one download
• Twelve input formats including HEIC, PDF, and Office documents
• AI mode when you prefer plain-English instructions over manual toggles

How to use this tool

1. Upload PNG.
2. Enter width and height or pick aspect lock.
3. Optional: enable compress with KB targets from the platform or form.
4. Apply changes and download.
5. Upload the result to the platform and confirm preview looks correct.