SOURCE-CHECKED01
Can you crop a CC BY-SA image? A real before-and-after example
An actual photo crop shows how to preserve credit, describe changes and distinguish the image license from independent article text.
TOPIC / HOWCURIO
Image workflows.
Practical ways to prepare, inspect, and reuse image files with clear source and rights checks.
20 GUIDESCHOOSE YOUR OUTCOME
What are you trying to finish?
Choose a task, follow the documented steps, and check the resulting image before using it.
SOURCE-CHECKED02
Remove an image background in Mac Preview and check transparent edges
A mug can have a clear outer edge and a pink handle hole. Compare actual reference PNGs before placing your cutout.
SOURCE-CHECKED03
Straighten a tilted photo in Windows Photos
Compare a tilted input, a corrected full canvas, and a cropped copy with two edge markers that disappear.
TESTED04
AVIF vs WebP: compare your files and keep a working fallback
Our AVIF export was larger than WebP, and a broken AVIF URL did not automatically switch to JPEG. See the files and the fix.
SOURCE-CHECKED05
Can you use a CC NonCommercial photo on a blog with ads?
A real photo with conflicting notices explains why free downloads and attribution do not settle permission for an ad-supported blog.
TESTED06
Crop a photo to 16:9 in Windows without cutting off the subject
Two 1200-by-675 crops have the same ratio but keep different content. Position the frame before you resize.
SOURCE-CHECKED07
How to batch resize images on a Mac without stretching them
A portrait resized to 1,200 pixels wide is still 1,800 pixels tall. Work out the batch size before saving.
SOURCE-CHECKED08
How to check image dimensions on a Mac and fix upload size mistakes
Two files can have the same pixels at different print resolutions. Check the saved image against the upload rule.
SOURCE-CHECKED09
How to convert HEIC to JPEG on a Mac without losing the original
A JPEG export can be larger than the HEIC source. Compare format, pixel dimensions, and bytes before sending.
SOURCE-CHECKED10
How to credit a CC BY photo on a website
A real licensed photograph, finished caption and HTML example explain where credit belongs and how to describe image changes.
SOURCE-CHECKED11
How to redact a screenshot without hiding the error you need help with
Hide account details and preserve the exact error, with before-and-after practice screenshots.
TESTED12
How to write alt text: four uses of the same real image
The same trail diagram needs different alt text depending on what its placement communicates or does.
TESTED13
JPEG or PNG? Compare text, texture and transparency
See why PNG was smaller for our interface image, JPEG was smaller for our texture, and a white JPEG corner stayed opaque.
SOURCE-CHECKED14
Make a photo attachment smaller in Mac Preview
Compare pixel resizing, JPEG quality, actual bytes, and the detail that must survive in your email copy.
SOURCE-CHECKED15
Remove a photo background in Windows Photos without cutting off the subject
Use the background mask in the right direction, then compare the subject with the original before saving.
TESTED16
Responsive images with srcset: a working example you can download
Download three real image sizes and inspect which file a browser selects at mobile and desktop widths.
TESTED17
SVG vs PNG for logos: why an SVG can still look blurry
An SVG can contain a small bitmap. Inspect the source and size the PNG export for its actual destination.
TESTED18
Take a Windows support screenshot that shows the problem clearly
Compare two real captures of a fictional upload form and use the Windows capture steps to send a readable, relevant support image.
TESTED19
WebP fallback: why a broken image does not switch to JPEG
A working three-case demo shows when JPEG is selected and when a broken WebP remains broken.
TESTED20
Why your transparent PNG has a white box or halo
A PNG can be fully opaque, and a transparent edge can still contain pale colors. Compare the actual files before re-exporting.