Open files in VS Code and Cursor / Machine learning files

A safetensors viewer for VS Code

Install the free Tensor Viewer and click the .safetensors file. It reads the header first, so even a large file lists every tensor with its dtype and shape right away (a 10.7 GB file opened in under a second in our test). Click a tensor to load its values and see stats, a heatmap and a histogram.

Free, MIT license. Extension ID zovo.tensor-viewer, version 0.4.0. Needs VS Code 1.90.0 or newer.

Steps in VS Code

1. Install Tensor Viewer from the Marketplace, or press Ctrl+P (Cmd+P on macOS) and run ext install zovo.tensor-viewer.
2. Click a .safetensors file. The table lists every tensor.
3. Click a tensor to see min, max, mean, std, NaN and Inf counts and a heatmap.
4. Save one tensor as .npy or CSV if you want to work with it elsewhere.

Steps in Cursor, Windsurf or VSCodium

1. Open the Extensions view with Ctrl+Shift+X (Cmd+Shift+X on macOS).
2. Search for zovo.tensor-viewer and click Install. Cursor, Windsurf and VSCodium install from Open VSX, where it is published as zovo/tensor-viewer.
3. If your editor has no gallery, download the .vsix from the Open VSX page and run "Extensions: Install from VSIX...".
4. Then use it the same way as in VS Code.

What Tensor Viewer handles

• GGUF files too: metadata, plus Q8_0, Q4_0, Q4_K, Q5_K, Q6_K and other common types dequantized for stats.
• PyTorch .pt, .pth and .ckpt files, decoded as data. The header says whether torch.load with weights_only=True should accept the file.

What it does not do

• Stats come from a sample of 2,000,000 values by default, and the panel says when it is a sample.
• Sharded GGUF files show the open shard only. Some GGUF types (Q2_K, Q3_K, IQ) show no stats.

Other options

• safetensors viewer (zhoukz.safetensors, 2,484 installs, not on Open VSX). Its own description: "A .safetensors metadata viewer." Not on Open VSX.
• Hugging Face Hub. Model pages on the Hub show the tensors of hosted safetensors files in the browser.
• The safetensors Python package. safe_open(path, "pt") lists keys and loads single tensors.

Install counts and Open VSX status were checked on 8 November 2026. Descriptions in quotes are the extensions' own.

Questions

More about Tensor Viewer

Read the Tensor Viewer page for every feature and setting, or the source code on GitHub.

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