User Guide

Learn how to use all PDFJPG features effectively.
Get the results you want quickly with step-by-step guides.

1. PDF Conversion Tools

1.1 Convert PDF to JPG

1
File Upload

Drag and drop the PDF file or click the file selection button to upload.

2
Option Settings

Select image quality (50%-100%) and output format (JPG, PNG, WebP).

3
Start Conversion

Click the conversion start button to begin the conversion process.

4
Download Results

After conversion is complete, click the download button to save the images.

Useful Tips

  • Selecting high quality settings will give you sharper images.
  • PDFs with multiple pages will convert all pages into individual images.
  • WebP format provides the same quality as JPG with smaller file sizes.

2. Image Conversion Tools

2.1 Convert Images to PDF

1
Image Upload

Upload JPG, PNG, WebP and other image files by dragging or selecting them.

2
Background Color Setting

For transparent images, you can choose background color (white, black, transparent).

3
Quality Setting

Select PDF compression quality to balance file size and quality.

4
Convert and Download

Download the generated PDF file after conversion is complete.

3. Image Compression

3.1 How to Compress Images

1
Image Upload

Select or drag the image files you want to compress to upload them.

2
Compression Method Selection
  • Quality-based Compression: Compress by setting desired quality level
  • Size-based Compression: Compress by setting target file size
3
Preview and Compare

Compare before and after compression to select appropriate compression level.

Compression Guide

  • Website Use: 70-80% quality for fast loading speed
  • Email Attachment: 50-60% quality to solve attachment size limits
  • SNS Upload: 80-90% quality to maintain sharpness

4. Image Resizing

4.1 How to Resize Images

1
Resize Methods
  • Percentage Adjustment: Adjust by percentage relative to original size (e.g. 50%, 200%)
  • Pixel Specification: Specify exact width and height in pixels
  • Preset Sizes: Quick adjustment with common purpose-specific sizes
2
Maintain Aspect Ratio

You can resize while maintaining the original image's aspect ratio.

3
Resampling Method
  • High Quality: Takes longer processing time but produces sharper results
  • Fast Processing: Quick processing speed with basic quality

4.2 Recommended Sizes by Purpose

Social Media

  • Instagram Square: 1080×1080px
  • Facebook Cover: 1200×630px
  • YouTube Thumbnail: 1280×720px

Website

  • Banner Image: 1920×1080px
  • Blog Thumbnail: 800×600px
  • Profile Image: 400×400px

5. Image Cropping

5.1 How to Crop Images

1
Image Upload

Select or drag the image you want to crop to upload it.

2
Area Selection

Drag with mouse to select the area to crop and adjust by dragging the corners.

3
Ratio Setting

You can choose desired ratios like free ratio, square, 16:9, etc.

4
Execute Crop

Check settings and click the crop button to complete.

Cropping Tips

  • Check preview to confirm the desired area is selected.
  • Fixing ratio allows you to create consistently sized images.
  • Original file remains unchanged after cropping.

6. Image Rotation and Flipping

6.1 Rotation and Flip Tools

1
Quick Rotation
  • Left 90°: Rotate image 90 degrees counterclockwise
  • Right 90°: Rotate image 90 degrees clockwise
  • 180°: Rotate image 180 degrees (upside down)
2
Flipping
  • Horizontal Flip: Flip image horizontally to create mirror image
  • Vertical Flip: Flip image vertically
3
Precise Rotation

You can rotate precisely to 1-degree units using slider or direct input.

4
Rotation Background

You can choose background color for empty spaces created when rotating at non-90-degree angles.

7. General Usage Tips

File Upload

  • Drag and Drop: Dragging files into browser window uploads them immediately
  • Multiple Selection: You can select multiple files at once for batch processing
  • Supported Formats: Supports most formats including JPG, PNG, WebP, PDF
  • Maximum Size: Individual files can be processed up to 25MB maximum

Browser Compatibility

  • Recommended Browsers: We recommend using Chrome 80+, Firefox 75+, Safari 13+
  • Enable JavaScript: Please enable JavaScript to use all features
  • Disable Popup Blocking: If downloads are blocked, please disable browser popup blocking

Performance Optimization

  • Large Files: Larger files may take longer to process
  • Concurrent Processing Limit: Processing many files at once may slow down performance
  • Use Preview: For large files, we recommend checking with preview before processing

8. Troubleshooting

8.1 Common Problems

When File Upload Doesn't Work

  • Check if file size exceeds limits (PDF: 25MB, Images: 10MB)
  • Confirm it's a supported file format (JPG, PNG, WebP, PDF)
  • Try refreshing browser or using a different browser

When Conversion Fails or Stops

  • Check if file is not corrupted
  • Close other tabs to free up browser memory
  • Refresh page and try again

When Download Doesn't Work

  • Check browser popup blocking settings
  • Check download folder capacity
  • Check if antivirus software is blocking downloads

8.2 Support Request

If you need help, please contact us anytime through contact page.

  • If problems persist, please include browser information and file type when contacting us
  • Including screenshots or error messages helps faster resolution

Quick Start Guide

Step 1: Upload File

Select or drag the file you want to convert to upload it.

Step 2: Configure Options

Set necessary options like quality, format, etc.

Step 3: Start Conversion

Check settings and click the conversion button.

Step 4: Download Results

Download the result file when conversion is complete.