Batch compress event photos for a faster landing page

Event galleries tend to arrive as a pile of exports, not a tidy set of web assets. The deadline is often close, and uploading full-size photos can slow the page or run into a content system’s file limits. A workable routine is to export for the web, compress in manageable batches, and inspect the results before publishing.

PiPic handles JPG, PNG, WebP and AVIF files up to 8 MB each, with up to 100 images in a batch. It is a browser workflow, free without registration or watermarks. It does not replace photo editing or turn camera RAW files into web images: start with exports in one of its supported formats.

1. Make a clean set of web exports

Keep the original camera files untouched. Export a separate set for the landing page in the format your site already uses. If the gallery is meant to use JPG, export JPG; if your delivery plan uses WebP or AVIF, export those formats instead. PiPic returns the same format it receives, so it will not convert a JPG batch into WebP.

Use a predictable naming scheme before compression. Names such as stage-001.jpg and stage-002.jpg are easier to check than a mixture of camera-generated names and duplicates. Put the exports in a dedicated folder, and keep a copy of that folder as your source set. Compression does not make the source copy unnecessary; it gives you a smaller delivery version to review.

Check the file sizes as well. Each file must be 8 MB or smaller to fit PiPic’s limit. Set aside anything larger and prepare another suitable export before starting the batch. Do not assume a file was processed just because it was part of the event shoot.

2. Divide the photos into batches

Count the files and group them in sets of no more than 100. For a set of 240 photos, for example, prepare two groups of 100 and one group of 40. Keeping batches aligned with a gallery section, day, or location can make the output easier to track, but the key constraint is the 100-image maximum.

This is also a useful point to remove obvious rejects: accidental duplicates, closed eyes, or frames that are not intended for the public gallery. Compression is not a culling step. A smaller file still needs an editorial decision.

3. Compress each group and collect its ZIP

Open PiPic in a browser and add the first group of supported image files. Compression starts when the files are added. When the batch is ready, use the ZIP download for the group, then repeat with the next group. A single archive per batch is simpler to transfer and unpack than handling every output file separately.

Save each ZIP with a name that identifies its contents, such as event-gallery-day-1. Keep the ZIPs in a temporary output location, separate from your original exports. When you extract them, use a dedicated destination folder so compressed files do not get mixed into the source set. If you are handling several sections, extract each batch into the corresponding folder.

PiPic’s browser version does not require registration and adds no watermark. The service says files are deleted from its servers immediately after compression. That is useful for reducing the time files remain on the service, but it does not replace your own handling rules for event photos: choose what to upload, keep the originals under your control, and publish only approved images.

4. Check the gallery before publishing

Do not treat a completed ZIP as proof that the gallery is ready. Extract the files and compare the output count with the batch you submitted. Open a representative mix of images, including dark scenes, stage lighting, and close-ups. Check that faces and fine details still look acceptable at the size they will appear on the landing page.

PiPic keeps the input format and image dimensions. That means compression alone will not resize oversized exports for a layout that needs smaller dimensions. Check the page’s actual image requirements separately, and make any needed sizing decisions before the final export. Also confirm that filenames and image-to-caption matches survived the handoff.

For upload workflows, the same discipline applies: compare every output against your destination’s limits and visual standards. The portfolio CMS upload checklist covers that verification step in more detail.

5. Publish from the reviewed output folder

Once the checks pass, use the extracted compressed files as the gallery set. Keep the source exports and the final output separate, and retain the ZIPs only as long as they help your handoff or recovery process. This gives a producer one archive to move per batch, while leaving a clear path back to the originals if a caption, crop, or selection needs to change.

The repeatable part is straightforward: export supported formats below the per-file limit, divide the set into groups of 100 or fewer, download one ZIP per batch, then inspect before upload. It avoids turning a last-minute event gallery into a folder of untracked replacements—and makes the compression step useful without confusing it with image editing or quality control.