· 4 min read
Fixing invalid JSON — the five errors that cause almost everything
Trailing commas, single quotes and unquoted keys account for most JSON failures. Here is how to recognise each one from the error message.
developersjsonguides
Blog
Guides that go a level deeper than the tools — how the formats actually work, which settings matter, and the mistakes worth avoiding.
· 5 min read
How to choose a strong password (and why yours probably isn't)
What actually makes a password hard to crack, why the old rules made things worse, and how long is long enough.
securitypasswordsguides
· 4 min read
What your photos reveal about you (and how to stop it)
Every photo carries hidden metadata — often including the exact coordinates where it was taken. Here is what is in there and how to remove it.
privacyimagesguides
· 4 min read
Why your PDF is too large to email — and how to fix it
Where PDF file size actually comes from, why some documents refuse to shrink, and the order to try fixes in.
pdfguides
· 4 min read
JPG, PNG or WebP — which image format should you use?
A decision guide for the three formats you actually encounter, including when each one is the wrong choice.
imagesformatsguides
· 4 min read
How to compress images without losing quality
What image compression actually does, which quality setting to use, and why your PNG sometimes gets bigger instead of smaller.
imagesperformanceguides