Curated list of the top free tools for batch editing photos, applying effects, and adding watermarks efficiently.
Get targeted exposure with custom position pinning and highlighted placement.
Lightweight image viewer with powerful batch conversion, resizing, and watermarking capabilities via its built‑in batch processor.
Cross‑platform batch image processor supporting over 500 formats, with built‑in options for resizing, filters, and text/image watermarks.
Fast, user‑friendly viewer that includes a batch conversion tool for resizing, color adjustments, and adding watermarks.
Open‑source raster editor; the BIMP (Batch Image Manipulation Plugin) adds batch resizing, renaming, and watermarking.
Powerful command‑line suite for batch image processing, supporting complex watermark overlays, resizing, and format conversion.
Free, open‑source photography workflow application offering non‑destructive batch editing and export presets, including watermark options.
Advanced RAW processor with batch editing capabilities; export presets can embed watermarks during the final export.
Feature‑rich photo management suite with batch processing tools for resizing, color correction, and watermarking.
All‑in‑one photo editor that includes a batch editor for resizing, format conversion, and adding text/image watermarks.
Dedicated batch converter focused on resizing, renaming, and watermarking with a simple drag‑and‑drop interface.
Enhanced version of XnView offering batch processing, metadata editing, and watermarking across many image formats.
Linux‑focused photo manager with basic batch editing (rotate, crop) and export options that can include watermarks via plugins.
Although discontinued, the free version still provides batch resize, rename, and watermark functions for Windows users.
Open‑source RAW editor with batch processing via the 'Batch Edit' feature, allowing watermark application during export.
Simple batch photo processor for Linux/Windows that can resize, rotate, and add watermarks using a graphical workflow.
Free version supports basic batch resizing, format conversion, and watermarking for up to 100 images per session.
Free online editor offering limited batch processing via the 'Upload & Edit' flow, including quick watermark overlays.
Web‑based design tool that lets you apply a saved watermark template to multiple images using its bulk upload feature.
Open‑source digital painting app; with the 'Batch Export' plugin you can export multiple files with watermarks.
Lightweight Windows editor; the Watermark plugin adds batch watermarking via the 'Batch Process' extension.
Free edition provides batch processing for resizing, format conversion, and adding text/image watermarks.
HDR processing suite that includes batch tone‑mapping and the ability to embed watermarks during export.
Modern image viewer with a simple batch rename/resize tool and optional watermark overlay via extensions.
Mac‑only free lite version offering batch resizing, format conversion, and watermarking for up to 50 images.
Windows utility focused on batch resizing with built‑in options to add text or image watermarks.
Versatile image processing framework; its GUI (gmic-qt) includes batch mode for applying filters and watermarks.
Online Photoshop‑like editor that supports batch actions via scripts, enabling bulk watermark application.
Cross‑platform photo editor with a batch export feature that can embed a custom watermark on all exported images.
Companion to IrfanView; the thumbnail viewer can trigger batch operations, including watermark overlay, on selected files.
Free video editor that can process image sequences; useful for batch applying watermarks to frames before re‑export.
While primarily a metadata editor, ExifTool can be scripted to add watermark overlays via external image processors.