LocalLens

LocalLens is an offline visual search engine for image and video collections stored on your devices. It suits people who want to find and compare files in their own folders, rather than search the wider web. Its range of search methods and open-source licensing make it a capable no-cost option, provided you are comfortable setting up and securing access to your indexed directories.

Overview

LocalLens turns indexed folders into a searchable media collection through a web interface or command line. Search results are ranked by visual similarity, so the app is useful for locating files that resemble a description or reference image, but it is not a general web-search service. The offline design favors privacy-conscious users managing their own libraries; the default directory access calls for care if you expose the gallery to others.

Key features

Search by text and image

Describe what you are looking for and LocalLens ranks indexed media against that description. Alternatively, upload an image to find visually similar files, or combine an image with text to refine results. This flexibility is valuable when a collection is too large to browse manually, though similarity ranking is not the same as an exact-match guarantee.

Indexing and duplicate finding

LocalLens recursively indexes directories into ChromaDB and can sync indexed folders to reflect additions and deletions. That makes it better suited to a changing library than a static, one-off scan. Its duplicate finder surfaces duplicate and near-duplicate image pairs using a similarity threshold. The threshold can help flag likely repeats, but near-duplicates still merit human review before deleting anything.

Models, formats and interfaces

Supported vision embedding backbones include SigLIP 2, MetaCLIP, DFN-CLIP and CLIP. Supported media includes JPG, PNG and WebP images and MP4 and MKV video. A Gradio web UI serves visual browsing and search, while a command-line interface offers another way to work with the collection.

Privacy and access

The project describes LocalLens as offline, a useful distinction for users who want search over personal media without relying on a web-based image service. However, the gallery can access any indexed directory by default. If other people can reach the web interface, configure LOCALLENS_ALLOWED_PATHS to restrict accessible directories rather than assume indexing itself limits what the gallery can show.

Pricing

LocalLens is free open-source software under the Apache-2.0 license. Its LocalLens plan costs free, and no paid plans or usage limits are stated. There is no free trial because the software is free outright. That makes it a straightforward choice for users willing to run it themselves; there is no lower-cost hosted tier to trade setup effort for convenience.

Platforms

LocalLens supports Linux, macOS, Windows, web, and self-hosted use. Portable builds are provided for Windows, Linux and macOS; Linux and macOS installations require Python 3.10+ and Git. The documented baseline is a 4-core CPU, 8 GB RAM, 0 GB VRAM and 20 MB storage, with 6+ CPU cores, 12+ GB RAM and 4+ GB VRAM recommended. The modest baseline can suit a machine without a dedicated GPU, while the recommended specifications are a more comfortable target for larger or more demanding libraries.

Who it's for

LocalLens is a strong fit for people with growing local photo or video libraries who want text search, visual matching and duplicate discovery in one self-hosted tool. It is less suitable for anyone seeking broad internet image search, a managed service, or a polished workflow that avoids local installation and access configuration.

Pros and cons

• Pros: Text, image and combined search give several ways to locate similar files in a personal collection.
• Pros: Folder syncing accounts for additions and deletions, while the duplicate finder can surface near-repeats as well as duplicates.
• Pros: Offline operation, open-source licensing and a free plan avoid subscription costs and fit privacy-conscious self-hosting.
• Cons: The gallery can access any indexed directory by default, so users sharing the web interface should restrict paths deliberately.
• Cons: Linux and macOS installations require Python 3.10+ and Git, adding setup work for users who prefer a fully managed app.
• Cons: Similarity-based results and thresholded duplicate pairs require judgment; the tool does not promise exact matches.

Alternatives

For a wider range of reverse-image-search options, browse Reverse Image Search Software.

Choose Lenso.ai if you want a freemium service spanning Android, iOS, browser extensions and other platforms, with Starter features that include 50 unlocks, 10 alerts and unlimited searches, or a Developer plan with 5,000 API calls.

Imagga Visual Search is an alternative for API-focused users who also need background removal, barcode recognition and OCR; its Indie plan is $79 a month, billed monthly, and includes 70,000 API requests.

Pick SearchReverseImage for free, unlimited photo searches on Android, iOS or web, with no signup or watermark and support for JPG/JPEG, PNG, WEBP or GIF images up to 4 MB.

ImageRights Discovery is another free option, with an ImageRights Pilot plan covering the first 100 images.

Pixsy is a better fit for monitoring images: its free plan monitors 500 images and includes regular-priority match scanning and unlimited case submission, but allows 0 takedown notices and limited import sources.

Reverse Image Search Anywhere is a free alternative for Android, browser-extension and web use.

RIMG offers free reverse-image searches on Android, iOS and web, with no usage limit stated.

SerpApi is an API-oriented alternative; its free plan includes 250 searches per month and 50 throughput per hour.

Verdict

Choose LocalLens if you want a free, open-source way to search and deduplicate your own local images and videos without sending the collection to an online search service. Its combination of text, image and duplicate search is the main reason to choose it. Look elsewhere if you need web-wide image search or want to avoid local setup and the responsibility of restricting gallery access.