compression Archives

AppWizard

August 3, 2025

Fix: “Skin Images Must Be 64×64 or 64×32 PNG Files” Error in Minecraft

Uploading a custom skin in Minecraft can result in the error message: “Skin images must be 64×64 or 64×32 pixel PNG files.” This indicates that the skin does not meet Minecraft’s requirements, which specify that skins must be either 64×64 or 64×32 pixels and in PNG format. Factors contributing to upload failures include using unofficial skin sources, incorrect file formats or dimensions, compatibility issues with different skin types, and temporary server problems. To troubleshoot skin upload issues: 1. Convert the image to PNG format using Paint by opening the file and saving it as a PNG picture. 2. Change skin dimensions to 64×64 or 64×32 pixels using a skin editor tool, verifying dimensions through file properties. 3. Disable the “Only Trusted Skins” setting in Minecraft Bedrock Edition to allow custom skins from non-official sources. 4. Convert the skin into a skin pack using the MCBuild Skin Pack Generator, ensuring the file is in PNG format and under 40KB in size. If problems persist, contact Mojang Support or check the official Minecraft bug tracker for ongoing issues.

Tech Optimizer

July 31, 2025

Cloudflare Chooses PostgreSQL Extension Over Specialized OLAP for 100K Row/Second Analytics

Cloudflare's team chose TimescaleDB over ClickHouse for its Zero Trust product suite to achieve a balance between managing analytical and configuration data and the performance of an OLAP system. They developed Digital Experience Monitoring (DEX), an observability platform that collects structured logs from WARP clients and presents them through a dashboard. Initially using ClickHouse since 2017, they faced limitations with its MergeTree engine, which struggled with numerous small writes from millions of devices. To expedite DEX's release, they used PostgreSQL, managing 200 inserts per second at launch, which scaled to 1,000 inserts/sec as usage grew, leading to performance degradation. They improved query performance by precomputing aggregates, achieving a 1000x improvement. Transitioning to TimescaleDB allowed for better management of time-stamped data with automated aggregation and data retention. Benchmarking showed performance enhancements of 5x to 35x compared to traditional PostgreSQL tables. Following DEX's success, TimescaleDB has been adopted for other Cloudflare initiatives, including Zero Trust Analytics & Reporting.

AppWizard

July 16, 2025

Konfety Android Malware Exploits ZIP Tricks to Masquerade as Legit Apps on Google Play

Security researchers from zLabs have identified a new version of the Konfety Android malware that uses advanced ZIP-level modifications to avoid detection and mimic legitimate apps on the Google Play Store. The malware employs an "evil-twin" strategy, distributing malicious versions with the same package names as harmless apps. It manipulates the APK's ZIP structure to disrupt reverse engineering tools, allowing it to evade analysis. The installation process on Android can handle these malformed packages without raising alarms. Konfety features a dynamic code loading mechanism, hiding a secondary Dalvik Executable (DEX) file that is decrypted at runtime, which contains malicious components. It integrates with the CaramelAds SDK for ad fraud, while disguising its activities through geofencing and icon concealment. The malware has been linked to previous campaigns and uses decoy applications on the Play Store for camouflage. Upon execution, it redirects users to fraudulent websites, leading to unwanted app installations and compromising user privacy. The threat actors behind Konfety continuously update their tactics to evade detection, highlighting the growing sophistication of Android malware. Users are advised to scrutinize app sources and monitor network activity to mitigate risks.

AppWizard

July 15, 2025

Konfety Android Malware on Google Play Uses ZIP Manipulation to Imitate Legitimate Apps

Zimperium’s zLabs security research team has identified a new variant of the Konfety Android malware, which employs advanced evasion techniques to bypass security analysis tools while executing fraudulent advertising operations globally. The Konfety malware family, first recognized during a mobile advertising fraud campaign in 2024, initially involved over 250 decoy applications on the Google Play Store and was responsible for 10 billion fraudulent ad requests daily. The malware uses sophisticated ZIP-level manipulation tactics to disrupt analysis tools, including misleading the General Purpose Flag within the APK’s ZIP structure to trigger password prompts and declaring an unsupported compression method in the AndroidManifest.xml file to crash analysis tools. Additionally, it utilizes dynamic code loading and obfuscation to hide malicious functionality, embedding executable code within encrypted assets and maintaining a benign appearance during installation. The malware has developed a command-and-control infrastructure that initiates contact through a sequence of network requests after user agreement acceptance. It also employs stealth techniques to conceal its application icon and name, complicating user identification and removal. Behavioral detection systems can identify malicious activity by monitoring application behavior patterns and network communications.

Winsage

July 12, 2025

Windows Insider Canary Channel Gets a Substantial Update

Microsoft has released Windows 11 Insider build 27898 on the Canary Channel, introducing several new features: - Taskbar icon scaling: Automatically adjusts the size of taskbar icons for a crowded workspace. - Custom words dictionary in Voice Access: Allows users to add unique words and supports Chinese and Japanese languages. - Screen Curtain in Narrator: Blacks out the display for privacy while using Narrator. - Quick Settings: Enhancements include text descriptions for assistive technologies. - File Explorer: Context menu now has dividers for better organization. - Adaptive energy saver: Manages energy settings based on power state and system load. - Windows Share improvements: Users can preview content before sharing and select image compression levels. - Quick Machine Recovery: Helps IT professionals detect and fix boot issues from the Windows Recovery Environment (WinRE).

Winsage

July 12, 2025

Windows 11 Build 27898 introduces taskbar icon scaling and system recovery improvements

Microsoft has released Windows 11 Insider Preview Build 27898 to the Canary Channel, introducing several new features aimed at enhancing usability and recovery. Key features include: - Taskbar Icon Scaling: The taskbar will automatically reduce icon sizes when it reaches capacity, with three customizable options for users regarding icon size. - Quick Machine Recovery: This feature allows automatic recovery from boot issues using the Windows Recovery Environment (WinRE), connecting to the internet for targeted fixes from Windows Update. - Accessibility Enhancements: Users can add custom words to the voice access dictionary, and a new Screen Curtain feature for the Narrator screen reader enhances privacy by blacking out the display. - Energy Saver Feature: An adaptive energy saver mode is being rolled out for battery-powered devices, managing energy saver settings based on power state and system load. - Sharing Features: The Windows share window now shows visual previews of shared content and allows users to select compression settings for images. - Performance Improvements: Enhancements have been made to file extraction for large archives, and the Snipping Tool now has a shortcut for launching the text extractor. - Default Browser Management: Users can set their default browser to handle PDFs and pin it to the Start menu and taskbar. The build also addresses various issues within File Explorer and Settings, although some known problems remain, such as display distortion in Remote Desktop on Arm64 PCs.

Winsage

July 11, 2025

Announcing Windows 11 Insider Preview Build 27898 (Canary Channel)

Windows 11 Insider Preview Build 27898 has been released to the Canary Channel. Key features include: - Taskbar Icon Scaling: Icons on the taskbar can automatically resize when the taskbar is full, with options to keep them at original size or always small. - Quick Machine Recovery: This feature identifies and resolves common issues automatically via the Windows Recovery Environment, reducing downtime. - Custom Words in Voice Access: Users can add custom words to the voice access dictionary to improve dictation accuracy. - Screen Curtain in Narrator: This feature blacks out the display for privacy while using Narrator. - Privacy Dialogs Update: Privacy dialogs for app permissions have been redesigned for better focus. - Accessibility Enhancements: Text descriptions for assistive technologies have been added to the Accessibility flyout. - File Explorer Improvements: Dividers have been added to the context menu for better organization. - Adaptive Energy Saver: An opt-in feature that manages energy saver settings based on power state and system load. - Windows Share Updates: Visual previews are now shown when sharing links or web content. - Expanded Voice Access Support: Voice access now supports Simplified Chinese, Traditional Chinese, and Japanese. - Narrator Guidance: Narrator will guide users through its features with modal windows. - Settings Adjustments: The selected country or region during setup is now displayed in Settings. Fixes include performance improvements in File Explorer, resolution of input issues with the touch keyboard, and fixes for crashes in Settings. Known issues involve potential loss of Windows Hello PIN on new Copilot+ PCs and graphical issues with Remote Desktop on Arm64 PCs.

Tech Optimizer

July 8, 2025

How TimescaleDB helped us scale analytics and reporting

At Cloudflare, PostgreSQL and ClickHouse are used as primary databases for transactional and analytical workloads. PostgreSQL is preferred for product development due to its speed, versatility, and reliability, with hundreds of instances running in various configurations. ClickHouse, introduced in 2017, allows ingestion of tens of millions of rows per second with millisecond-level query performance but comes with trade-offs. The Digital Experience Monitoring (DEX) product was developed with a focus on simplicity and rapid shipping, utilizing a team of three engineers and collaboration with other teams. DEX's initial launch included fleet status logs uploaded every two minutes and synthetic tests with usage caps, leading to a successful MVP launch ahead of schedule. The architecture included an HTTP API, PostgreSQL for storing configurations, and a React UI in the Cloudflare Dashboard. PostgreSQL was chosen for analytics due to its ability to handle structured logs, with a table created for device state logs lacking a primary key but optimized with unique and standard indexes for common queries. The UPSERT query was used for data insertion, and the order of columns in multicolumn indexes was optimized for performance. After launching DEX, the system scaled to 1,000 inserts per second, leading to performance degradation. Precomputed aggregates were implemented to improve query performance, resulting in up to a 1000x improvement. Table partitioning was considered but ultimately not pursued due to its manual management requirements. TimescaleDB was explored as an alternative to enhance query performance, offering features like automatic partition management, continuous aggregates, and compression. A side-by-side comparison with PostgreSQL showed significant performance improvements, particularly for longer time windows. TimescaleDB's integration allowed for efficient data retention and aggregation, simplifying the infrastructure. Following the success of DEX, other teams at Cloudflare began using TimescaleDB for analytics and reporting, consolidating data from various sources and managing high ingestion rates effectively by optimizing data handling techniques such as switching to COPY for bulk inserts and adjusting replication settings.

Winsage

July 2, 2025

One of the best PowerToys features just got even better — and it puts Windows Search to shame

PowerToys has released version 0.92, introducing several enhancements: - Command Palette: Improved performance with Ahead-of-Time (AOT) compatibility for first-party extensions and core UX fixes. - Color Picker: Users can customize mouse button actions for a personalized workflow. - Bug Report Tool: Streamlined reporting process with progress indicators, improved compression, and automatic cleanup of old trace logs. - File Explorer Add-ons: Enhanced rendering stability, fixing issues with PDF previews, blank thumbnails, and text file crashes. Additional highlights include: - Crop & Lock: Updated window styling to match the current Windows theme. - Command Palette Extensions: New commands like "Copy Path" and improved input handling in the Calculator extension. - FancyZones: Resolved DPI-scaling issues for high-resolution displays. - PowerRename: Now supports date-based renaming with flexible formatting options. The development team has also made updates to enhance performance and security, including updates to .NET libraries and the WinAppSDK. PowerToys is available for free download through the Microsoft Store or GitHub.

Winsage

June 27, 2025

Microsoft Belatedly Delivers Windows 11 Preview Updates

The anticipated preview updates for Windows 11 versions 22H2, 23H2, and 24H2 were released two days later than expected, including an optional preview update for users. The cumulative update KB5060829 for Windows 11 version 24H2 upgrades the OS to build 26100.4484 and introduces several new features: - "Ask Copilot" action for users with a Copilot+ PC and Microsoft 365 license, allowing easy copying and pasting into the Copilot app. - A new landing and pairing page in the Windows Backup app for future PC migration, enabling file and settings transfer during setup. - A return of the small Taskbar option, allowing users to reduce Taskbar icon size. - Enhanced Narrator feature with a new Screen Curtain capability for privacy. - Settings homepage improvements for commercial customers. - Windows Share feature now includes a preview option and three compression levels for images. - EU compliance enhancements for customers in the EEA related to Digital Markets Act regulations. Optional cumulative updates 22621.5549 and 22631.5549 are available for Windows 11 versions 22H2 and 23H2, respectively, including some of the new features.