Noman Mustafa
Owner
Noman Mustafa — Founder of Convertavo I build the file tools on this site. Fifteen years of writing software, and most of my days now go into making PDF, image and OCR processing fast enough to run in a browser tab. I write here about what I learn breaking files apart.
Articles by Noman Mustafa
Guides
How to Scan Documents With Your Phone for an Online Form
No scanner? Photograph your papers, turn them into one PDF, and meet the page size, file size and page order rules that decide whether an online form accepts your upload.
Video
How to Send a Video on WhatsApp Without Losing Quality
Why WhatsApp makes your videos blurry, its real size limits, and three ways to send a video without losing quality: tap HD, send it as a document, or compress it yourself first.
Guides
How to Add Multiple Links to Your Instagram Bio
Instagram allows five links, but only the first one shows on your profile. Here is how to add them, and how to put every link on one page instead.
OCR
How to Copy Text From an Image
Copy text from any image in seconds: the built-in way on iPhone, Mac and Windows, a free reader for 35+ languages, and how to fix a bad result.
Guides
What to Do When a Client Doesn't Pay Your Invoice
A client hasn't paid your invoice. Here is what to send on day 1, day 7 and day 30, three emails to copy, and the interest and fees you may add.
Guides
File Size Limits for Email and Apps in 2026: Gmail, Outlook, WhatsApp, Discord
The current file size limits for Gmail, Outlook, Yahoo, iCloud, Discord, Slack, WhatsApp and Telegram in one table, why a file under the limit can still bounce, and how to get it small enough.
Guides
Is This Short Link Safe? How to Check Before You Tap
Got a short link you do not trust? See where it really goes before you tap, the red flags to look for, and why a link that was safe yesterday can change.
OCR
How to Get a Table From a Picture Into Google Sheets
Turn a screenshot or photo of a table into rows in Google Sheets in about a minute, and keep blank cells and leading zeros where they belong.
Images
Why Does Instagram Make Your Photos Blurry?
Instagram blurs photos because it resizes and re-compresses them. Post at the size it wants, from your original, and there is nothing left to ruin.