Guides
Practical walkthroughs for the resizing jobs people actually need. Every guide uses the free resizer on this site; no other software is required.
Resize an image to 20KB, 50KB, or 100KB
The KB limits SSC, UPSC, NEET and most portals demand — and how to hit them without the photo turning to mush.
Read the guide →Resize an image in cm for passport photos
How centimetres become pixels, why DPI matters, and settings for common passport and visa photo sizes.
Read the guide →Passport photo size by country
A full reference table — India, UK, US, Canada, EU/Schengen, Australia — in cm and pixels at 300 DPI.
Read the guide →Resize a signature to 10KB or 20KB
Why thin signature scans compress worse than photos, and how to keep them crisp at tiny sizes.
Read the guide →Resize for Instagram, Facebook & LinkedIn
Exact pixel sizes for posts, stories, covers and thumbnails across every major platform.
Read the guide →Resize images for a faster website
How dimensions and format drive page speed, and a practical resize workflow for web images.
Read the guide →Bulk resize images without uploading them
Processing dozens of photos at once in your browser, and the settings that work well for batches.
Read the guide →JPG vs PNG vs WebP — which to use
What each format is actually good at, and a quick decision guide for choosing output format.
Read the guide →Compress an image without losing quality
Format, resolution, and where JPEG quality settings actually matter — practical, not vague, advice.
Read the guide →Resize an image in MB
The MB-to-KB conversion table and settings for larger, megabyte-scale size limits.
Read the guide →Free image resizer vs Canva
Side-by-side comparison — when Canva's built-in resizer is the better choice, and when it isn't.
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