Import PNG frames
Drop a transparent PNG sequence into the window in natural filename order.
NS product familyA Nioret Systems product
Creator / sprite-frame alignment
NS Sprite Lock
Stabilize transparent PNG animation frames on a shared canvas before they enter a game or animation pipeline.
For pixel artists, game developers, and creators who want a focused alignment step before a larger sprite workflow.
FreeNo account, card, or trial
Available
PlatformWindows 10+ x64
Version1.0.0
LicenseFree download
BillingNo card required
SupportDirect from Nioret
The problem it solves
Good frames can still wobble when their canvases do.
Transparent PNG frames can have different bounds around the visible sprite. Played in sequence, those shifting bounds can make correct artwork appear to wobble. Sprite Lock aligns the visible pixels on a shared transparent canvas so the motion stays anchored from frame to frame.
OutcomeReduce unwanted position wobble across transparent PNG sequences.
MechanismAlpha-aware bottom or center alignment places frames consistently while preserving manual per-frame correction.
ProofOriginal and aligned playback, frame nudging, and non-destructive export make the result easy to inspect.
How it works
From PNG sequence to stable frames.
Import transparent PNG frames, align them by a bottom or center anchor, inspect Original and Aligned playback, then export the stabilized sequence without changing the source artwork.
Align and inspect
Choose an alignment mode, auto-align the sequence, then compare original and aligned playback.
Export safely
Write aligned PNGs or a compact sprite sheet to a new collision-safe destination.
What it helps you do
Alignment control, without a larger animation editor.
Sprite Lock keeps the job narrow: stabilize the sequence, verify the motion, and hand clean frames to the next tool.
Remove unwanted wobble
Alpha-aware alignment places frames consistently by bottom or center anchors.
Keep pixel control
Nudge individual frames by one or ten pixels, reset adjustments, and use undo or redo.
Compare the motion
Switch between original and aligned playback from 1–60 FPS.
Protect the source
Exports never overwrite imported frames and use new Aligned folders when a destination exists.
Stay offline
The self-contained app requires no account or internet connection.
Who it is for
Creators who need one clean alignment step.
Pixel artists cleaning animation sequences.
Game developers preparing transparent PNG frames.
Creators who want a free focused entry point before a larger sprite workflow.
Requirements and availability
See whether it fits your workflow.
NS Sprite Lock 1.0.0 is available as a free Windows download. No account, card, or trial required.
System requirements
- Windows 10 or later, x64
- No separate runtime required
- Works offline
FreeFree download
Free download
Free download
Version ownership
Includes NS Sprite Lock 1.0.0 and all 1.x updates. No card required and no recurring monthly or annual billing.
Works offline without an account. Imported frames remain local and exports are written only to the selected Windows folder.
Read licensing overviewQuestions
Before you choose Sprite Lock.
Which files does NS Sprite Lock accept?
Version 1.0.0 works with transparent PNG animation frames.
Will it overwrite my source art?
No. Export is non-destructive and redirects existing destinations to Aligned_2, Aligned_3, and later folders.
How does it relate to NS Sprite Forge?
NS Sprite Lock is the free focused alignment entry point. NS Sprite Forge is the broader paid progression still in development.
Where can I download it?
Get the free NS Sprite Lock 1.0.0 installer from the official Download Center.
Related software
Other focused Nioret tools.
Related products are limited to genuine adjacent workflows.
NS Sprite Lock
Stabilize your sprite animation frames before export.
Get NS Sprite Lock 1.0.0 for Windows. No account, card, or trial required.