Webcam, speaker and dead-pixel checks before a meeting
Run a quick device checklist in your browser so your next video call starts without surprises.
Read guide →Guides
Make QR Guides
Short, useful how-tos that lead straight into free browser tools — no signup, no watermark, private by default.
Scientific calculator online: DEG/RAD and expression tips
Use DEG vs RAD correctly, edit expressions with a cursor, and calculate trig and logs in the browser.
Read guide →BMI calculator: what the number means (and what it doesn’t)
Use a free BMI calculator responsibly — understand categories and the limits of BMI as a health signal.
Read guide →Mortgage and loan payments explained with a free calculator
Estimate monthly loan or mortgage payments and see how rate and term change the total.
Read guide →How to use a percentage calculator for discounts and tips
Work out sale discounts, tip amounts and percentage change quickly with a free online calculator.
Read guide →Keyboard test checklist before buying a used laptop
Test every key, ghosting and stuck switches in the browser before you pay for a used laptop.
Read guide →QR code color mistakes that break scanning
Avoid low contrast, inverted colors and busy backgrounds that make QR codes unscannable.
Read guide →How to create an email or SMS QR code
Pre-fill an email or text message with a static QR code for support desks and print materials.
Read guide →PNG vs JPG vs WebP: which format should you use?
Choose the right image format for photos, graphics and websites — with free conversion tools.
Read guide →Reorder PDF pages before you send a contract
Drag pages into the right order, then download a clean PDF for signing or sharing.
Read guide →Extract selected PDF pages into a new file
Save only the pages you need into a new PDF without uploading documents.
Read guide →Delete pages from a PDF without Acrobat
Remove unwanted PDF pages locally in Chrome or Edge — free and private.
Read guide →How to rotate PDF pages that scanned sideways
Fix sideways or upside-down PDF pages in your browser without installing Acrobat.
Read guide →How to test your microphone in the browser
Check mic levels, permissions and left/right input before a call — free browser microphone test.
Read guide →Convert images to WebP for faster websites
Convert PNG or JPG images to WebP in the browser to shrink assets for faster page loads.
Read guide →Compress JPG without ruining quality
Reduce JPG file size for email and web while keeping photos sharp enough — browser-side compression.
Read guide →Split a PDF into separate files (step-by-step)
Split a PDF into page ranges or separate files in your browser — free, private, no signup.
Read guide →How to create a vCard QR code for business cards
Encode name, phone, email and company into a vCard QR code for networking and printed cards.
Read guide →Best QR code size for print (business card, A4, poster)
Recommended QR print sizes for business cards, flyers, A4 sheets and posters so phones can scan reliably.
Read guide →How to make a QR code with a logo that still scans
Add a logo to a static QR code without breaking scans. Error correction, size and contrast tips from Make QR.
Read guide →How to scan a QR code on PC (camera, paste, upload)
Scan QR codes on your computer with camera, Ctrl+V paste, or image upload — free browser scanner from Make QR.
Read guide →How to create a WiFi QR code guests can scan in seconds
Create a free WiFi QR code with your SSID and password. Guests scan once to join — no signup, no watermark, static and private.
Read guide →Static vs dynamic QR codes: which should you use?
Compare static and dynamic QR codes. Learn why static codes never expire, avoid ad redirects, and keep working without a paid subscription.
Read guide →Merge PDF files in your browser without signup
Merge multiple PDF files in your browser without signup. Free, private, client-side PDF merger from Make QR.
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