BulkPicTools: batch image processing in the browser, and its limits

TL;DR · Short answer

BulkPicTools is a free image toolbox that runs in the browser and installs as a web app. Its home page says it compresses, converts, crops and resizes 200+ images in one pass, across 95 tools, and that nothing is uploaded. On 5 November 2026 we added a test image and saw no request carrying it leave the page for bulkpictools.com; the only new request was an icon fetch. We did not test a batch of 200, and the page loads ad and analytics scripts. Treat the privacy and batch-size claims as the site's own, partly confirmed.

What it is

BulkPicTools groups image tools for compressing, converting, cropping, resizing, GIF work and format changes such as HEIC to JPG. The home page lists 95 tools and quick starts such as converting iPhone HEIC photos, preparing a visa photo at 35x45 mm, or resizing product photos to 1000x1000. Its distinguishing claim is that results flow from one tool to the next without downloading and re-uploading between steps. These are the site's descriptions, read on 5 November 2026.

Mentioned here: 🖼️ BulkPicTools, 🗜️ Squoosh, 📝 JPG to PDF Mobile, 🖼️ Photopea

What we observed on 5 November 2026

Two quick checks in a clean Chromium browser. They show what the page does; they do not show how it behaves under load.

Check	Result
Web manifest	Present, display standalone, 192 and 512 px icons, including a maskable one
Service worker	Registered and active after about 25 seconds, pre-caching 88 files in a Workbox cache
Adding one test image (70 bytes)	No upload request to bulkpictools.com; one new request, an icon fetch to api.iconify.design
Other requests while the page loaded	Ad and analytics hosts: Google ad and consent services, Cloudflare Insights, Baidu statistics
Reload with the network off	Inconclusive: our emulation failed even with the worker active, so we do not confirm the Wi-Fi-off claim

What this does and does not prove

It supports the claim that adding a file does not send it to the site's own server. It does not cover the processing steps of every tool, the AI tools the site lists, or large files. The page also loads advertising and statistics scripts, so "nothing leaves your device" should be read as being about your image files, not about your visit.

We did not process a batch of 200 images, so the batch size is the site's claim.

Where it fits next to a single-image tool

Our article on compressing images without uploading them recommends a tool such as Squoosh for single images and small groups, with a side-by-side preview to choose the quality. BulkPicTools is aimed at the opposite case, many files at once, which that article says wants a different tool. For editing with layers or masks, use a photo editor. To turn images into a PDF, see JPG to PDF Mobile.

Frequently asked

Is BulkPicTools free?

The site says it is free, with no watermark, sign-up or daily limit. It shows advertising, which we saw loading on 5 November 2026.

Can I install BulkPicTools?

Yes. Its manifest declares standalone display with 192 and 512 px icons, and a service worker was active when we checked.

Are my images uploaded?

In our one test, adding an image sent no request carrying it to bulkpictools.com. We tested one tiny file and not every tool, so it is a partial confirmation.