Toolstia / Guides

Guides

Short, practical explanations of the things our tools deal with, so you know what is happening to your files and text.

5 min readWhat is EXIF data, and what does your photo reveal?EXIF data is information a camera or phone saves inside every photo: when it was taken, with what device, and sometimes exactly where. Here is what it holds and how to control it.
6 min readWhat is C2PA (Content Credentials) and what does it do to your images?C2PA is a standard that attaches a signed record of how an image was made or edited. Here is what it is, who uses it, and what it can and cannot prove.
5 min readHow to check a photo for hidden location data (and remove it)Step-by-step ways to see whether a photo has GPS coordinates on Windows, Mac, iPhone, Android and in your browser, and how to share it without them.
6 min readHow to find and remove hidden characters in AI-written textZero-width spaces, non-breaking spaces and stray symbols can sneak into text copied from chatbots and websites. Learn what they are, why they matter and how to clean them safely.
4 min readHow to merge PDF files without uploading them anywhereMany online PDF mergers send your documents to a server. Here is why that matters, and how to combine PDFs privately in your own browser.
6 min readHow to make a strong password (length beats symbols)A longer password is usually stronger than a shorter one full of symbols. Learn how password strength works, what to use instead of memorised rules, and how to stay safe.
5 min readHow to compress images without visible quality lossSmaller images load faster and fit in emails. Learn which format to choose, what quality to pick, and why reducing dimensions often matters most.
5 min readJSON errors explained: 6 mistakes that break your JSONTrailing commas, single quotes, unquoted keys and more. Learn the six most common reasons JSON fails to parse, with examples and fixes.