DoWatermark

DoWatermark adds text or logo watermarks to groups of photos in a browser. It accepts JPG, PNG, and GIF files, including mixed formats in one session, and lets users set watermark size, opacity, and position. Processed photos can be downloaded in a ZIP file in their original format and quality. DoWatermark says images are processed on the device with HTML5 Canvas and are not collected; the service also states it does not collect image metadata, watermark content, or usage metrics. After the first page load, it works offline. No account, email signup, installation, or browser extension is required. The free plan allows three images per batch. Pro costs $$4.99 as a one-time payment and includes unlimited batches of up to 150 images. Mobile batch limits are 50 images, or 30 on iOS and iPad. Pro licenses work on up to two devices for personal and commercial use. A 14-day money-back guarantee applies to Pro purchases.

DoWatermark offers browser-based batch watermarking with adjustable text or logo marks and ZIP export. Check the smaller free and mobile batch limits before choosing a plan.

DoWatermark suits people who want to watermark batches of photos without installing software or creating an account. It also supports mobile users, with smaller batch limits on phones and iPads.

DoWatermark is a browser-based tool for adding text or logo marks to batches of photos, aimed at people who want to process images without installing software or uploading them. It is most compelling when local processing and a one-time Pro purchase matter more than native-app workflows.

Overview

The central trade-off is clear: DoWatermark keeps image processing on the device and supports repeatable batch work, but the free tier handles only three images at a time. Pro raises that ceiling substantially, though mobile batches remain smaller than the desktop-browser allowance.

Key features

Watermarks can be text or logos, with controls for size, opacity and position. Saved presets help maintain a consistent mark across recurring jobs; they are more useful to frequent users than to someone watermarking a handful of one-off images. JPG, PNG and GIF files can be mixed in a session, and the ZIP export retains each image's original format and quality.

Processing uses HTML5 Canvas in the browser, so images do not leave the device. DoWatermark says it does not collect images, image metadata, watermark content or usage metrics, and states that it complies with GDPR. Website traffic uses HTTPS/TLS, while Paddle handles payments as a PCI DSS Level 1 certified provider. The service works offline after the initial page load, which helps when connectivity is unreliable but does not eliminate the need to load the site first.

No account, email signup, installation or browser extension is required. A Pro license permits personal and commercial use on up to two devices. Pro purchases come with a 14-day money-back guarantee, and support is available by email at [email protected].

Pricing

Free costs nothing and includes text and logo marks, saved presets and browser-based processing, but caps batches at three images. That works for occasional small jobs; repeated batches or larger photo sets will quickly make the cap inconvenient.

Pro costs $4.99, paid once, billed as a one-time payment for lifetime access. It includes batches of up to 150 images, unlimited batches, text and logo marks, saved presets, instant ZIP downloads and lifetime updates. For recurring or larger jobs, the one-time price is a meaningful advantage over a subscription. The license covers two devices, and Pro's 150-image batch allowance applies to Pro users; mobile limits are lower.

Platforms

DoWatermark runs in web browsers on desktop, tablet and phone, and is also supported on iOS and Android devices. Batch capacity depends on device: mobile users can process up to 50 images per batch, while iOS and iPad users are limited to 30. That makes it less suitable for large mobile-first jobs than its Pro desktop-browser ceiling suggests.

Who it's for

DoWatermark is a good fit for photographers, small businesses and other users who need consistent marks across image batches, value keeping files on-device, and prefer a browser tool over installing software. It is less suited to people who need large batches from an iPhone or iPad, or who need the free plan to cover more than three images at once.

Pros and cons

• Pro processes up to 150 images per batch: a useful ceiling for substantial jobs, paired with unlimited batches.
• Images stay on the device: browser-based processing avoids sending image files to the service.
• Mixed formats and original-quality ZIP export: JPG, PNG and GIF can be handled together without changing their original format or quality.
• Free is capped at three images per batch: even modest jobs may require repeated processing or an upgrade.
• Mobile caps are lower: 50 images on mobile generally and 30 on iOS/iPad, limiting phone-based batch work.
• Pro is limited to two devices: teams or users switching among more devices may find the license restrictive.

Alternatives

Photo Watermarking Software is a useful next step for comparing the broader category. Choose eZy Watermark if watermark templates, 300+ fonts, export to other apps and high-resolution watermark downloads better match the job. PictStamp is another option for readers focused on iOS and macOS. Pick Watermark Maker if tiling or social export presets are priorities, or if its $$24.99 one-time Watermark Pro — Lifetime plan suits your budget. Watermarkly spans more platforms, including Linux and Windows, but its free batch processing adds a Watermarkly logo; its 1-Year Access plan costs $19.95 a year and does not renew. Overlay Studio offers a free option with a 25-image batch limit, raised by a supporter code. iWatermark may suit readers looking for a tool with a free trial. Visual Watermark offers a 1-Year Access plan for $19.95 a year, non-renewing, covering 10 devices. Creatag is an iOS alternative with free single-item editing and limits on saved templates and exports.

Verdict

Choose DoWatermark if you want private, browser-based batch watermarking, repeatable presets and a low one-time cost for larger jobs. Its free three-image cap is narrow, and mobile limits of 50 images—or 30 on iOS and iPad—make it a weaker choice for bigger phone-based batches.