📖 Usage Notes
Image Compression & Crop
Hold the circular slider to adjust compression quality and size. Use the output format dropdown to select the output image format, then click the "Start Compression" button to compress the image.
Below the compressed image on the right, click the rotate and flip buttons to adjust the 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 of the crop box to rotate it at any angle. Click the pencil icon in the center of the crop box to manually enter width and height. Move the mouse inside the crop box (cursor becomes a four-way arrow) and drag to pan the crop box. Drag the squares around the crop box to resize the crop area. Click Apply to confirm the crop.
Add Image Watermark
You can enter your watermark text in the watermark text input box, select font and color, and hold the circular slider to adjust font size, transparency, and watermark tilt angle. Check tiled watermark to achieve the effect of multiple watermarks, and use the slider to adjust the watermark tile density.
For image watermarks, you can select any image as a watermark, and hold the circular slider to adjust the size, transparency, and tilt angle of the watermark image. You can also check tiled watermark to achieve the effect of multiple image watermarks, and use the slider to adjust the image watermark tile density.
ID Photo
Upload a clear front-facing portrait photo; otherwise face detection will fail.
The crop box is automatically generated at the optimal size and position based on intelligent face recognition. You can also manually adjust the crop size and pan the crop box. On the right side, choose from various background colors and specifications, and download a single photo or an 8-photo layout for convenient printing.
Image Split & Merge
Selecting 1 image defaults to split mode; selecting multiple images (up to 16) defaults to merge mode.
In merge mode, you can select preset canvas ratios or manually enter canvas dimensions (max 8000x8000px).
In merge mode, click an image to select it (a blue border appears). Use the mouse scroll wheel to zoom (up to 500% of original). Drag to pan the image; dragging it to an adjacent image position swaps their positions automatically.
With an image selected, click the flip button at the bottom of the right panel to flip it, or click reset to restore to initial state.
With an image selected, drag the rotation slider at the bottom of the right panel to rotate the image.
Hover over an image seam and drag to adjust the seam position.
The canvas background defaults to white. You can choose 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 upload. Choose "Page by Page" to convert each page into a separate image, or "Long Image" to merge all pages into one long image. For PPT/Word documents, export to PDF using Office first, then upload.
Selecting Ultra HD or HD quality produces better visual results but larger file sizes. For smaller image dimensions and file sizes, choose Normal or Compact mode.
You can specify any page range for conversion, flexibly selecting any consecutive set of pages, which helps with precise conversion and reducing file size.
For long images: if the image length exceeds 16383px, WEBP format cannot be used; if it exceeds 65535px, JPG/JPEG cannot be used. PNG has no image length limit.
Image to Document
Supports uploading up to 200 images, converting them into one or multiple documents, and saving as PDF.
Hold and drag photos to reorder the pages. Select the output method and page size, then click the convert button to generate and download the document.
⚙️ Feature Limitations
Image Compression & Crop
Max Upload: 60 images in batch (not recommended to batch upload images larger than 10MB as it may cause browser freeze)
Image Size: Max 200MB per image
Input Format: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, HEIC, PSD
Output Format: JPG, JPEG, PNG, WEBP (default JPG; if input image has a side exceeding 65535 pixels, output defaults to PNG)
Crop Limit: Cropping not supported if image side exceeds 30000 pixels
Output Filename: originalname_compressed_timestamp (single); originalname_compressed_timestamp_number (multiple)
Progress: Shows when total size exceeds 10MB, no indicator when less than 10MB (usually completes in 1 second)
Image Watermarking
Quantity Limit: Upload up to 60 images simultaneously (not recommended to batch upload images larger than 10M, may cause browser freeze)
Image Size: Maximum 200MB per image
Input Format: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, SVG, HEIC/HEIF, PSD
Output Format: If input format is JPG, JPEG, PNG, WEBP, output format matches input; for other formats, output will be automatically converted to PNG
Output Name: originalname_watermarked_timestamp (single image); originalname_watermarked_number (multiple images)
Watermark Type: Text watermark, Image watermark
Watermark Quantity: Single watermark, Tiled batch watermark
ID Photo
Max Upload: 1 photo at a time
Image Size: Max 200MB
Input Format: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, SVG, HEIC/HEIF, PSD
Output Format: PNG, JPG, JPEG, WEBP
Photo Requirements: Front-facing portrait with clearly visible face
Image Split & Merge
Max Upload: 1 image for split mode, up to 16 for merge mode
Image Size: Max 200MB per image
Input Format: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, SVG, HEIC/HEIF, PSD
Output Format: JPG, JPEG, PNG, WEBP
Output Size: Max 8000x8000px, Min 100x100px
Progress: Shows when total upload size exceeds 30MB, no indicator below 30MB (usually completes in 1 second)
Split Mode: Upload 1 image to enter split mode; supports custom rows/columns, max 10x10 grid
Merge Mode: Upload 2-16 images to enter merge mode; each puzzle type has multiple template layouts
Document to Image
Max Upload: 1 document at a time
File Size: Max 500MB, up to 3000 pages
Input Format: PDF
Output Format: JPG, JPEG, PNG, WEBP
Output Size: JPG/JPEG max height/width is 65535px. For long images exceeding this, reduce page range, use PNG output, or choose Normal/Compact to reduce image size. WEBP is not recommended for long images as WEBP max pixel limit is 16383px
Progress: Progress indicators shown for both document upload and conversion
Page Range: Flexibly select any consecutive page range
Image to Document
Max Upload: 200 images in batch (not recommended to batch upload images larger than 10MB as it may cause browser freeze)
File Size: Max 200MB per image
Input Format: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, SVG, HEIC/HEIF, PSD
Output Format: PDF
Progress: Shows when total size exceeds 10MB, no indicator below 10MB (usually completes in 1 second)
