Upsclr

Upscale on your PC. Nothing leaves it.

Upsclr is a free AI image upscaler for Windows. Drop a photo, pick a model and scale, and get a sharper version from your own GPU. Your photos never leave your computer.

Download for Windows

Free · 350 MB · Windows 10 and 11, 64-bit

See how it works
Done
Mountain lake with rowboats, source at quarter resolutionSource, ¼ res
cabin-lake.jpg · 1600 × 1068 · 4×
  • Done
    cabin-lake.jpg
  • Done
    portrait-scan.jpg
  • Working
    biscuit-phone.jpg
  • Drop an image or folder

Your images stay on your PC

Upsclr reads images from your folder, runs the model on your GPU or CPU, and writes the result back to your folder. Nothing is uploaded, ever.

  • No upload. Your images and results never leave this PC.

  • No cloud processing. The model runs on your own GPU or CPU.

  • No account. Nothing to sign in to, nothing tied to you.

  • Works offline. Upscaling needs no connection; unplug and it still runs.

  • No credits, limits, or tiers. It is free, for any number of images.

No cloud
  1. Your folder
  2. Your GPU or CPU
  3. Your folder
Where an image goes while Upsclr runs.

Four steps, one window

  1. ImageDrop a file or folder, or pick one. PNG, JPG, WebP, BMP and TIFF, with 16-bit and alpha supported.
  2. ModelChoose a bundled model or your own.
  3. Scale2×, 3×, 4× or a custom size.
  4. SavePNG, JPG or WebP, EXIF and ICC kept, into the folder you choose.
Upsclr window showing the Upscale view: image, model, scale and save steps in the left panel, and a lake photo split by a compare slider, original on the left and the 4x result on the right
Upscale
Working
Phone photo of a dog, shown at low resolution while its upscaled tiles are computed one by oneTile 0 / 48
Tiles resolve as your GPU finishes them

Tiles that fit your GPU

Large images are cut into tiles that fit your GPU memory, upscaled one by one, and stitched back.

  • Tile map See which parts have finished.

  • Slider Drag a handle across before and after.

  • Side by side Both versions at the same zoom.

Models on the shelf

Bundled models cover photos, scans, art and faces. Bring your own for anything else.

Upsclr window showing the Models view: a table of installed models with scale, speed, GPU memory and size, and the details of Real-ESRGAN x4plus, the default model
Models

Bundled models ship in the installer; import your own by dropping the file on the Models view.

  • Real-ESRGAN x4plusDefault

    General photos.

    2 to 4×

  • RealESR General v3

    Fast, lighter clean-up.

    2 to 4×

  • Real-ESRGAN Anime 6B

    Anime, art, illustrations.

    2 to 4×

  • Real-ESRGAN x2plus

    Gentle 2× for photos.

    2×

  • GFPGAN v1.4

    Face restoration add-on.

    1×

  • .onnx

    ONNX Runtime with DirectML on any DirectX 12 GPU, or the CPU.

    yours

  • NCNN .param + .bin

    Runs on the Vulkan backend.

    yours

  • .pth / .pt / .ckpt / .safetensors

    Converted to ONNX on import. RRDBNet, ESRGAN and SRVGG are built in; the optional converter pack adds about 30 more architectures.

    yours

Real-ESRGAN: BSD-3-Clause. GFPGAN: Apache 2.0 (Tencent ARC). YuNet face detector: MIT.

Upscl whole folders in one go

Drop a folder, or right-click it in Explorer and choose Upscale with Upsclr. Subfolders included. Each file keeps its name and lands in the output folder you pick.

  1. Done
    Fjord seen from a high granite cliff, upscaled
    DSC_0412.jpg
  2. Done
    Whitewashed village with a windmill, upscaled
    IMG_5502.jpg
  3. Done
    Woman paddling a canoe on a turquoise lake, upscaled
    IMG_5517.jpg
  4. Done
    Cup of raspberries on a wooden table, upscaled
    PXL_20250714_0931.jpg
  5. Done
    Cobbled city street between brick buildings, upscaled
    DSC_0433.jpg
  6. Done
    Pug wrapped in a blanket on a forest path, upscaled
    PXL_20250715_1802.jpg
  7. Done
    Sunset over a meadow with trees, upscaled
    DSC_0451.tif
  8. Working
    Castle on a forested hill, waiting in the queue
    IMG_5540.jpg
  9. Queued
    Hazy beach with swimmers in the surf, waiting in the queue
    PXL_20250718_1127.jpg
  10. Queued
    Pine forest and granite cliffs by a river, waiting in the queue
    DSC_0460.jpg
  11. Queued
    Canal with boats between old gabled houses, waiting in the queue
    scan_0231.png
  12. Queued
    Green ridge and winding road under low cloud, waiting in the queue
    DSC_0478.tif
Input
PNG, JPG, WebP, BMP, TIFF; 16-bit and alpha supported
Output
PNG, JPG or WebP; EXIF and ICC kept
Not yet
HEIC; convert to JPG first
From Explorer
Right-click a folder or files and choose Upscale with Upsclr
Output folder
Any folder you pick; names are kept
Upsclr window showing the Batch view: a folder of 24 images, 11 processed, with saved, upscaling and waiting rows in the queue
Batch

Try Upsclr on your own Imgs

Download the installer, run it, and drop in an image. Free, with no account needed.

Download for Windows
Version
0.1.0
Size
About 350 MB
Installs
Per user, no admin rights
Windows
Windows 10 and 11, 64-bit
GPU
Any DirectX 12 GPU via DirectML, or Vulkan via NCNN. CPU works too, slower.
Price
Free

Measured on an RTX 4080 SUPER: a 1024 × 683 photo at 4× with x4plus takes about one second. On CPU, a 480 × 320 image takes about 25 seconds.