Guides
Practical guides on formats, quality and file sizes — from the Filemanta editorial team.
What Is a HEIC File, and Why Won't It Open?
HEIC is the iPhone photo format: half the size of JPG, but not readable everywhere. What it means, HEIC vs JPG compared and how to open it on any device. 5 min read
JPG vs PNG: Which Format Should You Use When?
Photos as JPG; screenshots, logos and text as PNG. With a table for everyday cases, a real file size test and what happens when you convert. 4 min read
How to Turn a JPEG into a PDF on Mac and Windows, Without Software
How to save a JPG as a PDF on Mac with Preview or on Windows with Microsoft Print to PDF. No software, no cropped edges, several images in one file. 5 min read
How to Transfer Photos from iPhone to PC, and Actually Open Them
Transfer photos from iPhone to PC by cable with File Explorer or the Photos app, or without a cable via iCloud. Plus: what to do if HEIC photos won't open. 6 min read
How to Send a Picture as a PDF by WhatsApp, Email or Upload
To send a picture as a PDF, first turn it into a real PDF, then send it by WhatsApp, email or upload form. With file size limits and a quick checklist. 4 min read
How to Open a HEIC File on Windows, Android and Mac
HEIC file won't open? How to view iPhone photos on Windows 11 and 10, on Android and on a Mac, with Microsoft's extensions or free with nothing to install. 6 min read
How to Make a PDF on iPhone from Photos, Without an App
How to make a PDF on iPhone from photos, no app needed: the Print trick, the Files app or Safari with no server upload. Updated for iOS 27, HEIC included. 6 min read
How to Make a PDF a Picture on Mac, Windows and Your Phone
Save a PDF as a JPG or PNG: on a Mac with Preview, on Windows and on your phone. Plus the method that turns all pages into sharp images at once. 5 min read
How to Create a PDF File in Mobile, Without an App
How to create a PDF file in mobile without an app: Print in Google Photos, Samsung Gallery or Chrome with no server upload. Several photos, A4 or Letter. 6 min read
How to Convert HEIC to JPG on iPhone Without Changing Your Camera
How to convert HEIC to JPG on iPhone: change the camera or only convert what you send? Use Files or Safari with no server upload, many photos at once. 5 min read
How to Convert a Screenshot to PDF on Your Phone and Computer
How to convert a screenshot to PDF on iPhone, Android, Windows and Mac with built-in tools. Plus: combine screenshots into one PDF, keep long ones legible. 5 min read
How to Change a File Extension, and Why Renaming Doesn't Convert
Change a file extension on Windows 11 and 10, Mac and phone. Plus: why renaming .heic to .jpg doesn't make a real JPG, and how to truly convert images. 6 min read
How to Add a PDF in Word as an Image, Every Page Visible (and in PowerPoint)
Insert a PDF into Word or PowerPoint so every page shows, not just page 1: as pictures instead of an object. Compare the methods and keep print sharp. 6 min read