Open super.img files in your browser
One partition that holds Android's system, vendor and product, as phones from Android 10 on keep them. Open a super.img right here and look through each one's files. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your super partition opens like a folder of its logical partitions, with a page beside them on its slots and groups.
- Sparse or not • Unpacked as it's read
- system, vendor and product • Their files as folders
- Slots and groups • Each partition's group and size
- Export • Save as ZIP or Extract all
About super.img
Android 10 brought dynamic partitions in 2019: instead of a fixed size for each, system, vendor, product and the rest live inside one super partition, and updates can resize them. Factory images and ROMs come with a super.img, often as a sparse image, and super_empty.img holds only its tables, for fastboot to lay the partitions out before it writes each one.
The partition starts with 4 KB kept free, then its geometry and its metadata, kept twice for each slot: every logical partition's name, group and the extents it takes, in 512 byte sectors. A sparse image, as fastboot flashes them, keeps the blocks that hold data and notes where the rest are skipped or filled with one value.
Filepeek unpacks a sparse image as it reads it, lists each logical partition with its group and size, and opens it as its file system: EROFS through its own reader and ext4 through 7-Zip, so system's and vendor's files list like a folder. A partition of the other slot that an update left empty shows as empty.
Android super partition
.img
Format
- MIME type
- application/octet-stream
- Made by
- Google, for Android's dynamic partitions
- Released
- 2019
Inside the file
- Holds
- system, vendor, product and more
- Tables
- Its metadata, a copy for each slot
- Sparse
- Often, as fastboot flashes it
- File systems
- EROFS or ext4
Opens in every browser
Filepeek opens super partitions in Chrome, Edge, Firefox and Safari, on any computer or phone. On their own, browsers only download them.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Apps that open super.img
- Windowslpunpack and simg2img, in a terminal
- Maclpunpack and simg2img, in Terminal
- iPhone and iPadNo app reads it
- Androidfastboot flashes it from a computer
Questions
How do I see the files in super.img?
Drop it on this page. Each logical partition is listed, and picking system, vendor or product opens its file system as a folder, every file ready to open or save.
Do I need simg2img first?
No. Most factory images' super.img is a sparse image, and Filepeek tells by its first bytes and unpacks it as it reads, with no tool to run.
What is super_empty.img?
The super partition's tables alone, with no partition's bytes in it. fastboot uses it to lay out the partitions before it flashes each image, and Filepeek lists the partitions it lays out.
Why are the _b partitions empty?
A phone with A and B slots keeps a set of partitions for each, and a factory image fills only one. The next update fills the other.