📖 Usage Notes
Image Compression & Cropping
Drag the circular slider to adjust compression quality and output size. Use the format dropdown to select the output image format, then click the Compress button to process your images.
Below the compressed image on the right, use the Rotate and Flip buttons to adjust orientation. Click the Reset button to restore the image to its original state.
Click the Crop button below the original image to enter crop mode. Drag the rotation icon at the bottom-right corner of the crop box to rotate it freely. Click the pencil icon in the center to manually enter crop width and height. Move your cursor inside the crop box (it becomes a four-directional arrow) to pan it. Drag the handles around the crop box to resize it. Click Apply to confirm the crop.
Add Watermark to Image
Enter your watermark text in the text field, then choose a font and color. Drag the circular sliders to adjust font size, opacity, and tilt angle. Check the "Tile Watermark" option to repeat the watermark across the image, and use the density slider to control spacing.
For image watermarks, select any image to use as a watermark. Drag the sliders to adjust its size, opacity, and tilt angle. You can also enable "Tile Watermark" to repeat the image watermark across the entire photo, with an adjustable density slider.
ID Photo
Please upload a clear, front-facing portrait photo; otherwise face detection may fail.
The crop box is automatically generated based on AI face recognition for optimal size and position. You can also manually adjust the crop size and pan the crop box. On the right, choose from various background colors and size presets. Download a single photo or a layout of 8 photos for convenient batch printing.
Split & Merge Images
Uploading 1 image enters Split mode by default. Uploading multiple images enters Merge mode. You can merge up to 16 images at once.
In Merge mode, you can choose from preset canvas ratios or manually enter a custom canvas size, up to 8000×8000px.
In Merge mode, click an image to select it (a blue border appears). Use the mouse scroll wheel to zoom up to 500% of the original size. Hold and drag a selected image to pan it, and dragging it over an adjacent image will automatically swap their positions.
With an image selected, click the Flip button in the right panel to flip it. Click the Reset button to restore it to its initial state.
With an image selected, drag the rotation slider in the right panel to rotate it.
Hover over the seam between images and drag to adjust the split position.
The canvas background defaults to white, but you can choose any color or upload an image as background. Border size, spacing, and corner radius can all be adjusted using sliders.
Document to Image
Supports PDF uploads. You can convert each page individually into a separate image, or merge multiple pages into one long image. If your document is in PPT or Word format, please export it as a PDF using Office first before uploading.
Selecting Ultra HD or HD quality produces better visual results but larger file sizes. If you need smaller images, choose Standard or Compact mode for more efficient output.
You can specify any page range for conversion, allowing precise control over which pages to include, helping reduce output size.
When converting to a long image: if the height exceeds 16,383px, WEBP format is not available; if it exceeds 65,535px, JPG/JPEG is also unavailable. PNG format has no height limit.
Image to Document
Supports uploading up to 200 images and converting them into one or more documents, saved as PDF.
Drag and drop images to reorder pages. Once you have selected the output method and page size, click the Convert button to generate and download the document.
⚙️ Feature Limitations
Image Compression & Cropping
Batch limit: Up to 60 images at once (avoid uploading large batches of files over 10MB to prevent browser freezing)
Max file size: 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 any side exceeds 65,535px, output defaults to PNG)
Crop limit: Cropping is not supported if any side of the image exceeds 30,000px
Output filename: originalname_compressed_timestamp (single); originalname_compressed_timestamp_index (batch)
Progress indicator: Shown during upload and compression when total size exceeds 10MB; no indicator below 10MB (typically completes within 1 second)
Add Watermark to Image
Batch limit: Up to 60 images at once (avoid uploading large batches of files over 10MB to prevent browser freezing)
Max file size: 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, or WEBP, the output format matches the input; other formats are automatically converted to PNG
Output filename: originalname_watermarked_timestamp (single); originalname_watermarked_index (batch)
Watermark types: Text watermark, Image watermark
Watermark mode: Single watermark, Tiled watermark
ID Photo
Limit: 1 photo per upload
Max file size: 200MB
Input formats: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, SVG, HEIC/HEIF, PSD
Output formats: PNG, JPG, JPEG, WEBP
Photo requirement: Front-facing portrait with clearly visible face
Split & Merge Images
Limit: 1 image in Split mode; up to 16 images in Merge mode
Max file size: 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 dimensions: Max 8000×8000px, min 100×100px
Progress indicator: Shown when total upload size exceeds 30MB; no indicator below 30MB (typically within 1 second)
Split mode: Upload 1 image to enter Split mode; supports custom row/column count, up to 10×10
Merge mode: Upload 2–16 images to enter Merge mode; multiple layout templates available
Document to Image
Limit: 1 document per upload
Max file size: 500MB, up to 3,000 pages
Input formats: PDF
Output formats: JPG, JPEG, PNG, WEBP
Output dimensions: JPG/JPEG max height/width is 65,535px. When converting to a long image and the height exceeds this limit, reduce the page range, switch to PNG, or use Standard/Compact mode to reduce image size. WEBP is not recommended for long images as its max pixel limit is 16,383px
Progress indicator: Shown during both upload and conversion
Page range: Freely select any continuous range of pages
Image to Document
Batch limit: Up to 200 images at once (avoid uploading large batches of files over 10MB to prevent browser freezing)
Max file size: 200MB per image
Input formats: JPG, JPEG, PNG, WEBP, GIF, AVIF, BMP, TIFF, ICO, SVG, HEIC/HEIF, PSD
Output formats: PDF
Progress indicator: Shown during upload and conversion when total size exceeds 10MB; no indicator below 10MB (typically completes within 1 second)
