These guides explain common file tasks for online applications in plain language: how to prepare photos, signatures and documents, which format to choose, and how to avoid the mistakes that cause uploads to be rejected. Each guide links to the free tool that does the job.
- Reduce Photo Size to 20KB, 50KB or 100KB: Why phone photos are so large, and how to shrink one to a form limit without ruining it.
- Photo and Signature Checklist for Online Forms: What to check before you upload: format, size, pixels, background, file names and common rejection reasons.
- JPG vs PNG vs WEBP: Plain-language comparison of the three formats, with advice for online forms.
- Merge PDFs for an Application: Turn photos into PDFs, merge them in order, drop extra pages and keep the file under the limit.
- Passport-Style Photo at Home: Light, background, pose, then background change, resize and compress for an upload.
- Scan Documents with Your Phone: Light, angle and settings for readable scans, then combine pages and reduce the size.
Tools
All guides use the free tools on this site. You can find the full list on the home page, or read the how to use guide for a quick overview.