Guides
Simple step-by-step tutorials for using ImResizer tools. We're adding new guides regularly.
How to Compress Image to 20KB, 50KB, or 100KB
Learn to reduce photo size for SSC, UPSC, Banking exams. Step-by-step instructions with screenshots.
Read GuideHow to Make a Passport Photo
Create compliant photos for USA, UK, India, Canada, and more. Includes background change and head size guide.
Read GuideHow to Create a Digital Signature
Three methods: draw with mouse/touch, type your name, or upload an existing signature. PNG vs JPG explained.
Read GuideHow to Convert JPG to PDF
Combine multiple images into a single PDF. Adjust page size, orientation, and margins.
Read GuideHow to Merge Multiple PDFs
Combine several PDF files into one document in the order you want.
Read GuideHow to Extract Images from PDF
Convert each page of a PDF to JPG or PNG. Choose quality and DPI.
Read GuideSSC, UPSC, Banking Photo Requirements
Exact size and file requirements for competitive exams. Tips to avoid rejection.
Read GuideHow to Print Passport Photos at Home
Arrange multiple photos on 4x6 or A4 sheets using our print generator.
Read GuideHow to Resize Image in cm or mm
Use our unit converter to set exact dimensions in centimeters or millimeters for official forms.
Read GuideHow to Add Name and Date to Photo for SSC Exams
Learn to overlay applicant name and date in DD/MM/YYYY format exactly as required by SSC and other government exams.
Read GuideHow to Change Background Color in Passport Photo
Step-by-step instructions to change photo background to white, light blue, or any custom color for different country requirements.
Read GuideHow to Use the Crop Tool Effectively
Master the crop tool: maintain aspect ratio, free crop, and get perfect composition for your images.
Read GuideHow to Adjust Brightness and Contrast
Improve your photos by adjusting brightness, contrast, and saturation for better clarity in official documents.
Read GuideHow to Create a Signature for Banking Exams
Specific requirements for IBPS, SBI, RRB signature uploads. Size, format, and tips for acceptance.
Read GuideHow to Convert PDF to JPG
Extract images or convert entire PDF pages to high-quality JPG files for easy sharing.
Read GuideHow to Reduce PDF File Size
Compress PDF documents while maintaining quality – useful for email attachments and online forms.
Read GuideHow to Use DPI Settings for Print Quality
Understand DPI and how to set 300 DPI for high‑quality prints of passport photos and documents.
Read GuideHow to Take a Good Passport Photo at Home
Tips on lighting, background, camera position, and expression to get an acceptable photo on the first try.
Read GuideHow to Use the Flip and Rotate Tools
Correct image orientation by rotating left/right or flipping horizontally/vertically.
Read GuideHow to Create a Transparent Signature (PNG)
Save your signature with a transparent background for placing on any document without a white box.
Read GuideMore guides are added regularly. Have a suggestion? Let us know.