Guides & how-tos
Straightforward walkthroughs that link to the free, browser-based tool for each job — no uploads, no signup, your files never leave your device.
- WebmasterDNSHow-to
How to Check a Website's DNS, WHOIS, and SSL
Setting up a domain, or checking one out? Three lookups answer most questions: DNS (where it points), WHOIS (who registered it), and SSL (is the certificate healthy).
- ImagesiPhoneHow-to
How to Convert iPhone HEIC Photos to JPG
Your iPhone saves photos as HEIC to save space — but plenty of sites and PCs can't open them. Here is what HEIC is and how to convert it to JPG that works everywhere.
- DeveloperEncodingHow-to
Base64, JSON, and JWTs: How to Read Encoded Data
Base64 isn't encryption, a JWT isn't trustworthy until you verify it, and pretty-printing JSON usually reveals the bug. A quick field guide to reading encoded data — safely.
- OCRPDFHow-to
How to Extract Text from a Scanned PDF or Image
A scanned document is just a picture of words — you can't select, copy, or search it. OCR fixes that. Here is how to pull real text out of a scan or photo, privately.
- PDFSecurityHow-to
How to Password-Protect a PDF (and Remove One)
Emailing a sensitive PDF? Add a password first. Already have one you know on a file you own? Remove it. Here is how to do both privately, in your browser.
- ImagesCompressionHow-to
How to Reduce Image File Size for Email and Uploads
A 6 MB phone photo won't fit a 5 MB email limit or a 2 MB upload form. Here is how to shrink images the right way — compress, resize, or hit an exact size — without uploading them.
- ZakatFinanceGuide
When to Pay Zakat: Your Zakat Year (Hawl) Explained
Zakat isn't tied to Ramadan or the calendar year — it follows the hawl, a full lunar year of holding wealth above the nisab. Here is how the timing works, in plain terms.
- QR CodesWiFiHow-to
WiFi QR Codes: Let Guests Connect Without Typing Your Password
Reading your WiFi password out letter by letter gets old fast. A WiFi QR code lets any guest scan and connect in one tap. Here is how it works — and why it is safe to make one.
- PDFCompressionHow-to
How to Compress a PDF to 100KB, 200KB, or 500KB
Government portals and job forms often reject PDFs over a fixed size. Here is how to compress a PDF to an exact target like 100KB or 500KB, right in the browser.
- PDFPrivacyHow-to
How to Merge PDF Files Without Uploading Them
Most online PDF mergers upload your documents to a server. Here is how to combine PDFs entirely in your browser, so the files never leave your device.
- SecurityPasswordsHow-to
How to Create a Strong Password You'll Actually Remember
The old rules — a capital, a number, a symbol — make passwords hard for you and easy for computers. Here is what actually makes a password strong in 2026.
- MoneyTaxesPaycheck
How Your Take-Home Pay Is Calculated in 2026
Your salary and your paycheck are two different numbers. Here is exactly what comes out in between for 2026 — federal income tax, Social Security, and Medicare.