Guides, grouped by problem.
The questions behind the tools - answered plainly, tested honestly, and each ending in a fix that runs in your browser. New guides ship several times a week; the blog lists everything newest-first, and the glossary defines the jargon.
Make files smaller
Email limits, upload caps, and oversized exports.
- Why Is My Scanned Document So Large? A one-page scan hitting 5-10MB isn't a broken scanner - it's the default resolution and color mode doing exactly what they're set to do. What actually shrinks it.
- How to Compress a Photo Without Losing Quality Compression only looks lossless when you pull the right two levers - quality setting and resolution - in the right order. Here's the honest, non-magic version.
- How to Compress Photos for Email (Without Losing Quality) Email caps attachments around 20-25MB, and phone photos burn through that fast. The two levers that actually shrink photos - and the settings that keep them looking sharp.
- Why Is My PNG So Large? (And What Actually Shrinks It) A 4MB screenshot isn't broken - it's how PNG works. What makes PNG files huge, which fixes actually work, and the 'compression' advice that does nothing.
iPhone & HEIC
Why iPhone photos misbehave elsewhere, and the fixes.
- Why Do My iPhone Photos Look Different on Android? It's rarely the phone's fault. Wide-gamut color profiles, a HEIC-to-JPG detour along the way, and screen calibration each shift color a little - here's which one is actually happening.
- iPhone Photos Too Big to Upload? Here's How to Fix It Upload forms reject iPhone photos for two different reasons - file size and HEIC format - and the fix depends on which one you hit. How to tell them apart and shrink the photo properly.
- HEIC Won't Open on Windows? Every Fix, Explained Why Windows can't open iPhone HEIC photos, the two-minute fix, and how to stop it happening again - including the free codec catch Microsoft doesn't advertise.
Photo privacy & metadata
What your files quietly reveal, and how to clean them.
- How to Redact a Screenshot Before Sharing It Permanently redact names, messages, account details, and credentials from a screenshot, verify the result, and share only a flattened copy.
- Do Screenshots Contain Metadata? Usually not the GPS and camera EXIF a phone photo carries - screenshots are captured differently. What they can still carry, and the bigger risk that has nothing to do with metadata at all.
- How to Blur a Face in a Photo (No App Install) Drop the photo in a browser tab, let it find the face automatically, pick pixelate or blackout, download. No app, no account, no upload of the original.
- Selling Online Safely: What Your Product Photos Reveal Marketplace photos leak two different ways - hidden GPS data in the file, and visible clues in the frame. A pre-listing check for both before you post.
- What Is EXIF Data? What Your Photos Reveal About You EXIF data is the hidden information saved inside every photo - date, device, camera settings, often GPS location. What it contains, who can see it, and how to check and remove it.
- How to Remove Location Data From iPhone Photos Your iPhone writes GPS coordinates into every photo. Here's how to check what a photo reveals, remove it before sharing, and stop recording it - without uploading the photo anywhere.
- AI Images Can Carry Your Prompt: What's Inside a Generated PNG Many AI image tools write your full prompt, seed, and settings into the file itself. How to see what a generated image is carrying - and share the image without shipping your prompt.
Formats, explained
JPG, PNG, WebP, and when each one is the right call.
- What Does 300 DPI Mean? Pixels and Print Size Explained Learn what 300 DPI really means, calculate the pixels required for print, and see when changing DPI metadata helps without adding image detail.
- WebP vs JPEG for Websites: Which Should You Serve? WebP usually gives websites smaller image downloads than JPEG at similar quality. Learn when to use it, when JPEG still matters, and how to serve both.
- Why Does My Transparent PNG Turn Black When Converted to JPG? JPG has no transparency channel at all - something has to fill the see-through areas. Black shows up when a converter never bothered to choose, not because JPG prefers it.
- JPG vs PNG vs WebP: Which Format When (a Practical Guide) The three formats make different promises: JPG trades detail for size, PNG keeps every pixel, WebP does both jobs smaller. A working decision guide with the edge cases.
Safety & trust
What online tools actually do with your files - and how to tell.
- How to Convert Images Offline Without Uploading Convert JPG, PNG, WebP, HEIC, or AVIF without uploading private files. Compare built-in, browser-local, and desktop methods and verify the claim.
- Can a JPG Contain a Virus? The Honest Answer A JPG is usually passive image data, but fake extensions, decoder flaws, and hidden payloads create distinct risks. Learn what to check before opening one.
- How to Extract Text From an Image or Screenshot Extract editable text from screenshots, photos, and scans, improve OCR accuracy, and verify names, numbers, and links before using the result.
- Are Online Image Converters Safe? What Happens to Uploads Online converters are usually safe for casual images - but 'convert' means 'upload to a stranger's server' unless the tool runs in your browser. How to tell the difference, and when it matters.