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GoToolz Blog
Practical guides, tips and tutorials for working with PDFs, images, text, code and everyday digital tasks.
How to Compress an Image to 20KB, 50KB or 100KB (Without Losing Quality)
A step-by-step guide to shrinking photos, signatures and passport pictures to exact KB limits for online forms, with tips to keep them sharp.
How to Remove the Background from a Photo for Free (No App, No Upload)
Learn how to remove image backgrounds automatically with AI in your browser, make transparent PNGs, and replace backgrounds with white or blur for products and profile photos.
How to Merge PDF Files into One Document (Free, Online, No Upload)
Combine multiple PDFs into a single file in the right order, then delete, rotate or reorder pages, all for free in your browser.
How to Convert iPhone HEIC Photos to JPG (On Windows, Android or Any Device)
Why iPhones save photos as HEIC, how to convert HEIC to JPG or PNG in bulk for free, and how to make your iPhone shoot JPG by default.
JPG vs PNG vs WEBP: Which Image Format Should You Use?
A clear comparison of JPG, PNG, WEBP, AVIF and SVG with practical advice on which format to choose for photos, logos, screenshots and websites.
How to Create a Strong Password You Can Actually Remember
What makes a password strong, why length beats complexity, how passphrases work, and simple habits that keep your accounts safe from hackers.
How to Create a Google Drive Direct Download Link (Step by Step)
Turn a Google Drive share link into a direct download link, embed Drive images on your website, and export Google Docs and Sheets as PDF or Excel.
How to Sign a PDF Online for Free (Draw, Type or Upload a Signature)
Add your signature to contracts, forms and letters without printing or scanning. Learn three ways to create a signature and how to place it on any PDF.
What Is JSON? A Beginner's Guide with Examples
Understand JSON syntax, data types, common errors and how to format, validate and convert JSON to CSV or YAML, explained for beginners.
QR Codes for Small Businesses: 10 Smart Ideas and How to Make Them Free
Practical ways shops, restaurants and freelancers can use QR codes for menus, WhatsApp orders, Wi-Fi, reviews and payments, plus design tips that make codes scan reliably.
How to Reduce PDF File Size for Email and Online Forms
Why PDFs get so large and five proven ways to shrink them under 1 MB, 2 MB or 5 MB limits, from compression to smarter scanning.
How to Convert Video to MP3 and Cut Audio (Free, In Your Browser)
Extract audio from MP4 or MOV videos, choose the right MP3 bitrate, trim songs into ringtones and record your voice, all without installing software.