TECNOAMBASSADOR · PRESTASHOP MODULE
Tecno Images
Regenerate thumbnails in batches, clean leftover images and check the quality of your photos.
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| You changed the theme, adjusted the image sizes or imported thousands of products, and now thumbnails are missing. Regenerating them all at once can crash a server. Tecno Imágenes does it in batches, with a prior scan, the ability to pause and a speed that adapts to your hosting. It also cleans files that are no longer useful with a trash you can restore from and tells you which original photos are too small. |
| 🖼️ Batch thumbnails 🗑️ Restorable trash 🌎 English and Spanish |
What can you do?
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🖼️ Regenerate thumbnails your way
- What to regenerate: product, category, brand, supplier and store images.
- Mode: “only what's missing” (recommended, generates only the thumbnails that don't exist) or “redo everything”, which replaces the existing ones one by one.
- Sizes: choose which ones to regenerate; with no selection, all are used.
- Formats: the ones PrestaShop generates, with a warning if your server doesn't support one.
- Speed: gentle (ideal for shared hosting or large stores), normal or fast (for your own servers with resources to spare).
- Extras: apply the PrestaShop watermark module and clear the back office thumbnail cache when done.
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🔎 Prior scan and full control of the process
- Prior scan: counts how many thumbnails are missing and in how many images, without modifying any file.
- Start, pause, resume and stop whenever you want.
- Progress bar with the images processed, the speed in images per second and the estimated time.
- If the server struggles, it slows down by itself to protect it. If it loses the connection, it retries up to 5 times, and if there are too many errors in a row, it pauses by itself.
- Each thumbnail is replaced one at a time: if one fails, the previous one stays.
- If an image is too large for the memory or the process stops on it, it skips it and carries on with the rest.
- List of errors with the type of problem and the detail, and an activity log.
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🧹 Leftover image cleanup, with a trash
- Looks for files that are no longer useful. Nothing is deleted at first: you review the list first and then they are moved to a trash.
- Orphans: image files whose product, category or brand has already been deleted.
- Old sizes: thumbnails of sizes that are no longer defined in the image settings.
- Unused formats: thumbnails in formats PrestaShop no longer generates, for example WebP if you turned it off.
- Temporary files: leftovers from an interrupted regeneration.
- You choose which folders to check and which reasons to clean. Each reason shows the number of files, the space they take and examples.
- Restorable trash: restore each batch to its original place, or delete it forever when you're sure. Moving to the trash doesn't free space until you empty it.
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📏 Quality of your original photos
- Checks which of your original images are smaller than you need, without modifying anything.
- Choose the minimum shorter side, from 100 to 5000 px. For products, the shorter side of each image is measured; for the other folders, it's compared with the largest size you defined.
- Result per folder: images checked, below the minimum and borderline (they meet it, but look better on normal screens than on retina screens).
- List with the product, the current size and the size each image needs, and CSV download.
- The only way to avoid losing quality is to upload the photo again in a higher resolution, and this report gives you the list to do it.
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⚠️ Danger zone: delete all images of a group
- For when the images are no good (for example, you gave the same one to all brands or categories).
- Categories, brands, suppliers and stores: you first see a preview of what would be deleted and, to confirm, you have to type BORRAR.
- By default, files go to the trash and you can restore them. They are only deleted permanently if you tick that option.
- It doesn't touch the default images.
- Product images: deletes the files and also their records in the database. This action can't be restored, which is why the module recommends making a backup first.
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⏰ Automatic runs and server diagnostics
- Cron: a key-protected address that you schedule on your hosting (for example, every 5 minutes). Each call works for a few seconds and stops, so the server can breathe.
- With an extra option in the address, if nothing is in progress, the cron checks and generates what is missing across the whole store.
- Diagnostics: PHP version, memory limit (at least 256 MB is recommended for large images), maximum execution time, GD extension, formats your server supports, free disk space and write permissions of the images folder, with a recommendation on each warning.
- The module stops by itself before reaching the server's time limit.
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⚙️ A control panel made to fit you
- Installs inside the Design menu, next to the image settings, and its “Configure” button leads straight to the screen.
- Tabs: Regenerate, Clean and Quality.
- Summary of the store's images: missing thumbnails, processed and errors.
- Panel available in English and Spanish, with an Auto / ES / EN selector.
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✅ Benefits
- You regenerate thumbnails without crashing your server, even on shared hosting.
- Nothing is lost by mistake: everything cleaned goes through a trash.
- You know which photos are worth uploading again so they look sharp.
- Less space taken up by images nobody uses.
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Requirements
- PrestaShop 9.0 or higher.
- PHP GD extension enabled: without GD, thumbnails can't be generated.
- The product images folder with write permission, and free disk space for the new thumbnails.
- Optional: cron tasks on your hosting for the automatic runs. PrestaShop 9.1 or higher also includes a console command to regenerate thumbnails over SSH.
- Important: deleting product images can't be undone, so make a database backup first. Uninstalling the module loses the trash list, so restore anything you want to keep beforehand.
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