What this tool does
The Image Manipulator processes images in Airtable attachment fields using a pipeline of compression, resizing, and format conversion. Use it to standardize image sizes, reduce file sizes, convert formats, or create web-ready versions of uploaded images.Settings reference
Source
| Setting | Description |
|---|---|
| Source table | The table containing the attachment field with images. |
| Source attachment field | The attachment field to read images from. |
| Output attachment field | The attachment field to write processed images to. Can be the same as the source field. |
Compression
| Setting | Description |
|---|---|
| Enable compression | Toggle compression on or off. |
| Quality (1–100) | Image quality for lossy compression. Lower = smaller file, lower quality. Only shown when compression is on. |
| Lossless compression (PNG only) | Use lossless PNG compression. Only shown when compression is on. |
Resize
| Setting | Description |
|---|---|
| Enable resize | Toggle resizing on or off. |
| Resize mode | Max Dimensions, Exact Size, Percentage, or Preset. |
| Max width (px) | Maximum width in pixels (Max Dimensions mode). |
| Max height (px) | Maximum height in pixels (Max Dimensions mode). |
| Width (px) | Exact target width (Exact Size mode). |
| Height (px) | Exact target height (Exact Size mode). |
| Fit mode | Contain, Cover, or Fill (Exact Size mode). |
| Scale percentage | Scale by a percentage of the original size (Percentage mode). Range: 1–100. |
| Size preset | Thumbnail (150x150), Web (1200x800), Social (1080x1080), or HD (1920x1080). |
| Allow upscaling | Allow images smaller than the target to be scaled up. |
Format conversion
| Setting | Description |
|---|---|
| Enable format conversion | Toggle format conversion on or off. |
| Output format | Target format: JPEG, PNG, WebP, GIF, or TIFF. |
Execution settings
| Setting | Description |
|---|---|
| Overwrite source field | Replace original images with processed versions in the source field. |
| Batch size | Records per batch. |
| On error | Stop, Continue, or Skip record. |
Processing pipeline
Processing runs in this order: Resize → Compress → Convert. All enabled operations are applied in sequence to each image.Supported image types
The tool processes: JPEG, PNG, WebP, GIF, TIFF, BMP, SVG. Non-image files in attachment fields are skipped.Fit modes (Exact Size)
| Fit mode | Behavior |
|---|---|
| Contain | Scale the image to fit within the dimensions, preserving aspect ratio. May leave empty space. |
| Cover | Scale and crop to fill the exact dimensions, preserving aspect ratio. |
| Fill | Stretch or squeeze to fit exactly. Distorts the image if proportions differ. |
Common questions
Can I process images without changing the original?
Can I process images without changing the original?
Yes. Set the output attachment field to a different field from the source. The original images remain in the source field, and processed versions are written to the output field.
What happens if a record has multiple images in the attachment field?
What happens if a record has multiple images in the attachment field?
All images in the attachment field are processed. Each image goes through the full compression/resize/convert pipeline.
Does the tool report how much space was saved by compression?
Does the tool report how much space was saved by compression?
Yes. The execution log reports the original and processed file sizes for each image, so you can see the compression savings.