Guides

How-To Articles

Practical guides for working with PDFs and images — from compressing files to converting formats.

How to Compress a PDF
Learn how to shrink a PDF file while keeping text sharp and selectable. Covers why PDFs get large, what compression actually does, and a step-by-step walkthrough using a free in-browser tool.
How to Convert HEIC to JPG
Convert iPhone HEIC photos to JPG in your browser — free, no upload, works on Windows and Android. Step-by-step.
PNG vs JPG vs WebP vs AVIF: Which Format Should You Use?
A plain-English guide to PNG, JPG, WebP, and AVIF — what each is best at, and which to pick for photos, graphics, and the web.
How to Remove an Image Background Without Uploading It
Remove a photo's background in your browser — the AI runs locally, so your image is never uploaded. Free, no sign-up.
How to Merge PDFs With Different Page Sizes
Combine PDFs with mismatched page sizes into one tidy document — standardize to A4 or Letter in your browser, free and private.