📖 Operation Guide
Image Compression & Cropping
Drag the circular slider to adjust compression quality. Select the output format from the dropdown menu. After configuring parameters, click the "Start Compression" button to compress the image.
Below the compressed image on the right, click the rotate and flip buttons to adjust image orientation. Click the reset button to restore the image to its initial state.
Click the crop button below the original image to enter crop mode. Hold the rotation icon at the bottom-right corner of the crop box to rotate it at any angle. Click the pen icon in the center to manually input crop box width and height. Move the mouse inside the crop box (cursor becomes four-way arrow) to drag and reposition it. Hold the squares around the crop box to adjust crop size. Click the apply button to confirm cropping.
Image Watermark
Enter your watermark text in the text input box. Select font and color. Drag the circular sliders to adjust font size, transparency, and watermark angle. Check "Tile Watermark" to create a tiled watermark pattern. Use the slider to adjust watermark tile density.
For image watermarks, select any image as a watermark. Drag the circular sliders to adjust watermark size, transparency, and angle. You can also check "Tile Watermark" to create a tiled image watermark pattern. Use the slider to adjust image watermark tile density.
ID Photo
Upload a clear frontal portrait photo, otherwise face detection will fail.
The crop box is automatically generated based on intelligent face feature recognition with optimal size and position. You can also manually adjust crop size and reposition the crop box. On the right side, you can select various background colors and specifications. You can download a single photo or an 8-photo layout, convenient for printing multiple photos at once.
Image Split & Merge
Selecting 1 image defaults to image splitting. Selecting multiple images defaults to image merging. You can merge up to 16 images.
In image merging, canvas size can use preset ratios or manual input (maximum 8000x8000px).
In image merging, click an image to select it (blue border appears). Use mouse wheel to zoom (up to 500% of original size). Drag images to reposition. Drag an image to an adjacent position to swap images.
When an image is selected, click the flip button at the bottom of the right sidebar to flip the image. Click reset to restore to initial state.
When an image is selected, drag the rotation slider at the bottom of the right sidebar to rotate the image.
Place the mouse at image seams and drag to adjust seam position.
Canvas background defaults to white. You can select any color as canvas background or upload an image as background. Border size, spacing, and corner radius can all be adjusted with sliders.
Document to Image
Supports PDF document upload. You can choose "Convert by Page" (each page becomes one image) or "Convert to Long Image" (multiple pages are stitched into one long image). If your document is PPT/Word, please export it as PDF using Office first.
Choosing Ultra HD or HD image quality provides better display quality but results in larger image dimensions and file sizes. If you need smaller image dimensions and file sizes, select Normal or Compact mode for better results.
Conversion range allows you to input any page range. You can flexibly select any continuous page range, which helps achieve precise conversion and reduce image dimensions and file sizes.
When converting to long images: if image length exceeds 16383 pixels, WEBP format cannot be used; if image length exceeds 65535 pixels, JPG/JPEG format cannot be used. PNG format has no image length restrictions.
Image to Document
Supports uploading up to 200 images to convert into one document or multiple documents. Supports saving as PDF document.
Drag and hold photos to adjust image page order. After selecting output method and page size, click the convert button below to convert to the corresponding document and download.
⚙️ Feature Limits
Image Compression & Cropping
Count limit: Batch upload up to 60 images at once (large batches of images over 10MB are not recommended as they may cause the browser to freeze)
File size: Max 200MB per image
Input formats: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, HEIC, PSD
Output formats: JPG, JPEG, PNG, WEBP (default JPG; if the single-side pixel of the input image exceeds 65535, output defaults to PNG)
Crop limit: Cropping not supported if single-side pixel exceeds 30000
Output filename: original_compressed_timestamp (single); original_compressed_timestamp+index (batch)
Progress: Progress indicator shown for uploads/compressions when total image size >10MB; no indicator for <10MB (usually completes within 1 second)
Image Watermark
Count limit: Batch upload up to 60 images at once (large batches of images over 10MB are not recommended)
File size: Max 200MB per image
Input formats: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, SVG, HEIC/HEIF, PSD
Output formats: If input is JPG/JPEG/PNG/WEBP, output format matches input; otherwise output is automatically converted to PNG
Output filename: original_watermarked_timestamp (single); original_watermarked_index (batch)
Watermark types: Text watermark, Image watermark
Watermark count: Single, Tiled batch
ID Photo
Count limit: Upload 1 photo at a time
File size: Max 200MB
Input formats: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, SVG, HEIC/HEIF, PSD
Output formats: PNG, JPG, JPEG, WEBP
Photo requirement: Clear frontal portrait with visible face
Image Split & Merge
Count limit: 1 image in split mode; up to 16 images in merge mode
File size: Max 200MB per image
Input formats: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, SVG, HEIC/HEIF, PSD
Output formats: JPG, JPEG, PNG, WEBP
Output size: Max 8000x8000px, Min 100x100px
Progress: Progress indicator shown when total upload size >30MB; no indicator for <30MB (usually completes within 1 second)
Split mode: Uploading 1 image enters split mode; supports custom rows/columns, max 10x10
Merge mode: Uploading 2–16 images enters merge mode; multiple layout templates available
Document to Image
Count limit: Upload 1 document at a time
File size: Max 500MB, max 3000 pages
Input formats: PDF
Output formats: JPG, JPEG, PNG, WEBP
Output size: JPG/JPEG max height/width is 65535px; when converting to long image, if pixel height exceeds this, reduce page range, use PNG output, or select Normal/Compact to reduce size. WEBP is not recommended for long images (max 16383px)
Progress: Progress indicator shown during upload and conversion
Conversion range: Flexibly select any continuous page range
Image to Document
Count limit: Batch upload up to 200 images at once (large batches of images over 10MB are not recommended)
File size: Max 200MB per image
Input formats: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, SVG, HEIC/HEIF, PSD
Output formats: PDF
Progress: Progress indicator shown for uploads/conversions when total size >10MB; no indicator for <10MB (usually completes within 1 second)
