📖 Usage Notes
Image Compression & Cropping
Hold the circular slider to adjust compression quality and size. 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 watermark text in the text box. Select font and color. Hold the circular sliders to adjust font size, transparency, and watermark angle. Check "Tile Watermark" to create a tiled watermark effect. Use the slider to adjust tile density.
For image watermarks, select any image as the watermark. Hold the circular sliders to adjust watermark size, transparency, and angle. Check "Tile Watermark" to create a tiled image watermark effect. Use the slider to adjust 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 recognition. You can also manually adjust crop size and position. On the right, select background colors and size specs. Download a single photo or an 8-photo layout for convenient multi-photo printing.
Image Split & Merge
Selecting 1 image defaults to split mode. Selecting multiple images defaults to merge mode. Up to 16 images can be merged.
In merge mode, canvas size can use preset ratios or manual input (maximum 8000x8000px).
In merge mode, click an image to select it (blue border appears). Use the mouse wheel to zoom (up to 500% of original). Drag images to reposition. Dragging an image to an adjacent position automatically swaps them.
When an image is selected, click the flip button in the right sidebar to flip it. Click reset to restore to initial state.
When an image is selected, drag the rotation slider in the right sidebar to rotate the image.
Place the mouse at image seams and drag to adjust seam positions.
Canvas background defaults to white. Select any color 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. Choose "Page by Page" (each page becomes one image) or "Long Image" (multiple pages stitched into one long image). For PPT/Word documents, please export to PDF using Office first.
Choosing Ultra HD or HD quality provides better display quality but results in larger image dimensions and file sizes. For smaller output, select Normal or Compact mode.
Conversion range allows you to input any page range. Flexibly select any continuous page range for precise conversion and reduced output size.
When converting to long images: if image length exceeds 16383 pixels, WEBP format cannot be selected; if it exceeds 65535 pixels, JPG/JPEG format cannot be selected. PNG format has no image length restriction.
Image to Document
Supports uploading up to 200 images to convert into one or multiple documents. Supports saving as PDF.
Hold and drag photos to adjust image page order. After selecting output mode and page size, click the convert button to convert 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
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)
