How to Rotate PDF Pages
Turn sideways or upside down PDF pages upright in your browser, one page or all of them, and download the fixed file.
· 2 min read
Articles
Practical guides and tutorials for getting things done with our tools.
How to Merge PDF Files into One Document
Combine two or more PDF files into one in your browser, put the pages in the order you want, and download the merged file.
· 2 min read
How to Delete Pages from a PDF
Remove single pages or page ranges from a PDF in your browser, check the selection on the thumbnails, and download the file without them.
· 2 min read
How to Convert a PDF to PNG Images
Turn the pages of a PDF into PNG images in your browser, pick the pages and the image size, and download one page or all of them.
· 2 min read
How to Compress a PDF File in Your Browser
Make a PDF smaller for email or upload, compare the size before and after, and download the compressed file. Nothing is uploaded.
· 2 min read
How to Check JSON-LD Structured Data on a Web Page
Check the JSON-LD on any web page for errors and missing fields, see each schema.org item it describes, and read the JSON of every block.
· 3 min read
How to Check if an IP Address Is a VPN or Datacenter IP
Find out if an IPv4 or IPv6 address is on a known VPN list or datacenter list, and see the date the lists were last updated.
· 3 min read
How to Check if a Domain Name Is Available
Find out if a domain name is free to register or already taken. For a taken name, see the registrar, the date it was created and the date it expires.
· 2 min read
How to Add a Retro Film Date Stamp to Any Photo
Add the orange date stamp from old film cameras to a photo in your browser, and make it look real instead of pasted on.
· 3 min read
How to Extract Attachments from an MBOX File
Get the photos, PDFs, and documents out of a Gmail Takeout or Thunderbird mailbox file in your browser, without a mail client.
· 3 min read
How to Download a Wikipedia Article for Offline Use
Save any Wikipedia article as a PDF, Markdown, or plain text file in a few clicks, without the edit links and footnote numbers.
· 2 min read
How to Convert Colors Between HEX, RGB, HSL, and Other Formats
Convert a color between HEX, RGB, HSL, CMYK, and other formats, see which conversions are exact, and learn which format to use where.
· 2 min read
How to Check the Northern Lights Forecast
Use a live aurora map to see where the northern lights may be visible tonight, and learn what else you need for a good view.
· 2 min read
How to Check a Number with the Luhn Validator
Paste a card number or another number that uses the Luhn check, see if it is valid, and learn what the result means.
· 2 min read
How to Generate a Color Palette with AI
Describe a mood in plain words, like warm autumn cozy colors, and get a matching color palette in seconds.
· 3 min read
How to Create Chrome Web Store Screenshots for Your Extension
Make store listing images for your Chrome extension with a headline, a clean background, and the right size, without any design software.
· 2 min read