Guides
66 guides that start from the problem rather than the format. Each one explains what is actually going on and links to the tool that fixes it.
Any file
Image Converter
Open Image Converter- Your HEIC file isn’t broken, Windows just can’t read itWindows needs a codec it doesn’t always ship to open the HEIC photos an iPhone takes. Here is why and the three ways round it.
- Why does my transparent PNG have a black background?Check whether your PNG is actually transparent or has been flattened and learn how to export it with the background you intended.
- Why do images save as WebP instead of JPG?You saved a picture from a website and got a .webp file that’ll not upload or open. Here is why sites use WebP and the quickest way back to JPG or PNG.
Image Compressor
Open Image Compressor- How to reduce image size without losing visible qualityMost images are far bigger than they need to be. The three levers that shrink a file, in the order that loses the least and how far each one goes.
- Your photo is too large to emailAttachment limits are smaller than phone photos. The fix is usually dimensions rather than quality and it takes one pass.
Image Resizer
Open Image Resizer- How to make an image 300 DPIA form or printer wants 300 DPI. Work out the pixels you actually need, resize to them and change the DPI setting only when something really reads it.
- How to resize an image for a websitePick the right pixel width for hero images, content images and thumbnails, then compress and choose a format so pages load fast and stay sharp.
- What size should a profile picture be?Profile photos are cropped to a circle and shown tiny. Here is the size and shape that works nearly everywhere and how to make one that stays sharp.
Image Cropper
Open Image CropperImage Rotator
Open Image RotatorFavicon Generator
Open Favicon GeneratorImage to Base64
Open Image to Base64Merge PDF
Open Merge PDFSplit PDF
Open Split PDFRotate PDF
Open Rotate PDFDelete PDF Pages
Open Delete PDF PagesReorder PDF Pages
Open Reorder PDF PagesPDF to JPG
Open PDF to JPGPDF to PNG
Open PDF to PNGCompress PDF
Open Compress PDF- How to compress a PDF for email or an upload limitShrink a PDF to fit an email attachment or a portal’s size limit while keeping text sharp, and what to do when compression alone isn’t enough.
- Why won't my PDF get smaller?Compressing a PDF sometimes barely changes it. Here is what actually makes a PDF large and what to do when an upload limit won’t budge.
Add Page Numbers to PDF
Open Add Page Numbers to PDFWatermark PDF
Open Watermark PDFSign PDF
Open Sign PDFPDF to Text
Open PDF to TextExtract Images From PDF
Open Extract Images From PDFImage to PDF
Open Image to PDF- How to make a PDF from photos on an iPhoneTurn receipts, documents or a set of photos into one PDF on an iPhone, including HEIC photos, without an app. And how to keep the file small enough to send.
- Prepare documents for an online applicationOrganise photos and PDFs for an online application with clear pages, the right file sizes and a final check before you submit.
Add Border
Open Add BorderCircle Crop
Open Circle CropWatermark Image
Open Watermark ImageCombine Images
Open Combine ImagesColor Palette
Open Color PaletteRemove Background
Open Remove Background- How to make an image background transparentTransparency needs the right file format and a real cut-out. What works for photos of people, what works for logos and why a JPG can never be transparent.
- How to remove the background from a photoCut a person out of a photo and put them on white, a colour or a blur. What background removal can and can’t do and how to get clean edges around hair.
Image to Text
Open Image to Text- How to copy text from a screenshot or imageText in a screenshot or photo is just pixels until something reads it. Here are the built-in options on each device and a way that works anywhere.
- How to make a scanned PDF searchableA scanned PDF is a stack of pictures, so search and copy don’t work. What OCR does, the free ways to add a text layer and how to get the text out today.
QR Code Generator
Open QR Code Generator- Do QR codes expire?A QR code itself never expires. The ones that stop working are dynamic codes that depend on a paid redirect. Here is how to tell which kind you have.
- How to make a QR code for a linkMake a free QR code for any web address that keeps working for good. Static versus dynamic codes, how big to print it and how to test it before printing.
- How to put a QR code on a business cardA QR code on a business card can save your details straight to someone's phone. Contact card or link, how small it can print and the mistakes that stop it scanning.
- How to share your WiFi with a QR codeLet guests join your network by pointing their phone camera at a card, without reading out a password. How to make one that works and keep it secure.
QR Code Scanner
Open QR Code Scanner- How to scan a QR code from a screenshotA phone camera can’t scan a code on its own screen. How to read a QR code from a screenshot, a photo or a PDF on iPhone, Android and a computer.
- Is this QR code safe to scan?QR codes can hide a scam link as easily as a real one. Here is how QR phishing works, the warning signs and how to see where a code goes before you open it.
- Why is my QR code blurry or not scanning?Diagnose QR code scanning failures by checking the original image, surrounding margin, contrast and the final printed or displayed version.
File Hash Checker
Open File Hash CheckerRedact Image
Open Redact Image- How to blur a face or number plate in a photoHide faces, licence plates and house numbers before you post a photo. Which method actually hides them, which can be undone and what else to check.
- How to redact a document so it can’t be undoneA black box over text in a PDF often leaves the text underneath, ready to copy. Here is why redactions fail and how to make sure hidden information is really gone.
CSV to JSON
Open CSV to JSONJSON to CSV
Open JSON to CSVClean CSV
Open Clean CSV- How to remove duplicate rows from a CSVDuplicates creep in when exports overlap or lists are merged. How to remove exact duplicates, why near-duplicates survive and how to tidy the file first.
- Why does my CSV show strange characters?Accents turning into é and ’ in a CSV is an encoding mismatch, not corruption. What causes it, how to open the file correctly and how to stop it happening.
Excel to CSV
Open Excel to CSVCSV to Excel
Open CSV to Excel- CSV vs Excel: what is the difference?CSV is plain text any program can read; an Excel file holds formulas, formatting and types. When to use each and how to convert without damaging data.
- Why Excel removes leading zeros from your dataExcel turns 02134 into 2134 and long IDs into 1.23E+15 when it opens a CSV. Here is why it happens and how to get your data in without the damage.
Split CSV
Open Split CSVMerge CSV
Open Merge CSVJSON Formatter
Open JSON FormatterFile Type Checker
Open File Type Checker- Renamed a file and now it’ll not open?Changing a file extension doesn’t change what is inside. Why renamed files break, how to find out what a file really is and how to convert it properly.
- Why won’t a website accept my photo?Work through file format, dimensions, size and orientation to fix a rejected photo without making unnecessary edits or losing readability.
- What is a file extension?The letters after the dot in a file name tell your computer which program to use, not what the file is. How extensions work, how to see them and why they mislead.
Unzip Files
Open Unzip FilesCreate Zip
Open Create ZipEXIF Viewer
Open EXIF Viewer- Should you remove EXIF data before sharing a photo?When photo metadata is harmless, when it gives away where you live, which sites strip it for you and how to remove it without spoiling the photo.
- What is actually inside an image fileA photo isn’t just pixels. It carries the camera, the settings, the time, often the exact location and sometimes a serial number.
EXIF Remover
Open EXIF RemoverNot sure where to start?
If you know what you want done, go straight to the tool: the menu groups them by images, PDFs and data files. The guides are for when the problem is clear but the cause isn’t: a file that opens everywhere except one place, a spreadsheet that changed on its own, a PDF that refuses to get smaller.
Each guide explains what is actually happening before it suggests a fix and every fix it suggests runs on your own device.
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