📖 Usage Notes
Image Compression and Cropping
Hold the circular slider to adjust compression quality and size. Use the output format dropdown to select the desired format, then click the Start Compression button.
Below the compressed image on the right, click Rotate and Flip buttons to adjust image orientation. Click Reset to restore the image to its original state.
Click the Crop button below the original image to enter crop mode. Hold the rotate icon at the bottom-right of the crop box to rotate it freely. Click the pen icon in the center to manually input width and height. Drag inside the crop box to move it. Drag the handles on the edges to resize. Click Apply to confirm.
Add Watermark to Image
Enter your watermark text in the text input box, choose font and color, then use the sliders to adjust font size, opacity, and rotation angle. Check "Tile Watermark" to repeat the watermark across the image, and adjust density with the slider.
For image watermarks, select any image to use as a watermark and adjust its size, opacity, and angle with the sliders. You can also enable "Tile Watermark" for a tiled effect and adjust density.
Upload a clear front-facing portrait photo — detection will fail otherwise.
The crop box is auto-generated based on face detection. You can manually adjust the crop size and position. Choose background colors and photo sizes on the right. Download a single photo or a layout of 8 for convenient printing.
Split & Merge Images
Uploading 1 image enters Split mode by default; uploading multiple images enters Merge mode. Up to 16 images can be merged at once.
In Merge mode, you can select a preset canvas ratio or manually enter a custom canvas size (max 8000x8000px).
Click an image to select it — a blue border will appear. Use the mouse wheel to zoom (up to 500% of original). Drag an image to move it; dragging it to an adjacent image's position will swap them automatically.
After selecting an image, click the Flip button in the right panel to flip it, or click Reset to restore its original state.
After selecting an image, drag the Rotate slider in the right panel to rotate it.
Hover over the seam between images and drag to adjust its position.
The canvas background defaults to white. You can choose any color or upload an image as the 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 to a separate image, or "Long Image" to stitch multiple pages into one long image. For PPT/Word files, please export to PDF using Office first.
Selecting Ultra HD or HD quality produces better visual results but larger file sizes. For smaller output, choose Normal or Compact mode.
You can specify any continuous page range for precise conversion, which also helps reduce output size.
When converting to a Long Image: if the image height exceeds 16383px, WEBP format is unavailable; if it exceeds 65535px, JPG/JPEG is also unavailable. PNG has no height limit.
Image to Document
Supports uploading up to 200 images and converting them into one or multiple documents, including PDF format.
Hold and drag photos to adjust page order. Select output mode and page size, then click the Convert button to generate and download the document.
⚙️ Feature Limitations
Image Compression and Cropping
Quantity limit: Upload up to 60 images at once (not recommended for large batches of files over 10MB, may cause browser freeze)
Image 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 any side exceeds 65535px, default output is PNG)
Crop limit: Crop is not supported if any side of the image exceeds 30000px
Output filename: originalname_compressed_timestamp (single); originalname_compressed_timestamp+index (multiple)
Progress indicator: Shown when total image size exceeds 10MB; no indicator below 10MB (usually completes within 1 second)
Add Watermark to Image
Quantity limit: Upload up to 60 images at once (not recommended for large batches of files over 10MB, may cause browser freeze)
Image 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, or WEBP, output matches input format; otherwise output is automatically converted to PNG
Output filename: originalname_watermarked_timestamp (single); originalname_watermarked_index (multiple)
Watermark types: Text Watermark, Image Watermark
Watermark count: Single watermark, tiled batch watermark
Quantity limit: 1 photo per upload
Image 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 requirements: Front-facing portrait with clearly visible face
Split & Merge Images
Quantity limit: 1 image in Split mode; up to 16 images in Merge mode
Image 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 dimensions: Max 8000x8000px, min 100x100px
Progress indicator: Shown when total image size exceeds 30MB; no indicator below 30MB (usually completes within 1 second)
Split mode: Uploading 1 image enters Split mode by default; supports custom row/column count, max 10x10 split
Merge mode: Uploading 2–16 images enters Merge mode by default; multiple layout templates available
Document to Image
Quantity limit: 1 document per upload
File size: Max 500MB, up to 3000 pages
Input formats: PDF
Output formats: JPG, JPEG, PNG, WEBP
Output dimensions: JPG/JPEG max height/width is 65535px. For Long Image conversion, if the height exceeds this limit, reduce the page range, use PNG format, or select Normal/Compact mode. WEBP is not recommended for Long Image (max 16383px)
Progress indicator: Shown during both upload and conversion
Page range: Any continuous page range can be selected
Image to Document
Quantity limit: Upload up to 200 images at once (not recommended for large batches of files over 10MB, may cause browser freeze)
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 indicator: Shown when total image size exceeds 10MB; no indicator below 10MB (usually completes within 1 second)
