Relevant Web Pages

What's the go to JSON parser in 2024/2025? : r/cpp - Reddit
If performance doesn't matter then NLohman JSON has a ton of great features. Glaze is faster than simdjson and usually requires much less code ...
reddit.com
c++ - Cpp: JSON parser in Cpp that provide support Serialize/Deserialize feature, converting JSON objects to user-defined classes? - Stack Overflow
I've looked at native benchmarks for JSON parsers available in C++ and came to conclusion that RapidJSON is popular and best fit considering processing time and size handling.
stackoverflow.com
r/programming on Reddit: C++ JSON libs Reviewed/Compared - nlohmann, rapidjson, boost.json
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reddit.com
Python faster than C++ in deserializing json. Why? Is the json library in Python 3 written in C/C++ or other low-level language? - Stack Overflow
After a few runs, I had the shock to see that C++ takes 0.01 seconds and Python 3 takes about 0.001 seconds, which is almost 10 times faster!
stackoverflow.com
c++ - parse libcurl response with nlohmann json or rapidjson - Stack Overflow
rapidjson · nlohmann-json · See similar questions with these tags. The Overflow Blog · How Stack Overflow is taking on spam and bad actors · How AWS re:Invented the cloud · Featured on Meta · Community Asks Sprint Announcement – January 2026: Custom site-specific badges!
stackoverflow.com
stephenberry/json_performance: Performance profiling of JSON libraries - GitHub
This test demonstrates problems with simdjson and iterative parsers that cannot hash for memory locations.
github.com
c++ - How to parse JSON larger than memory? - Stack Overflow
Could I implement that using solely the Nlohmann json library/the standard libraries? ... Hint: Streaming parser or NDJSON. ... multidimensional array of what? If the answer is numbers, JSON's probably not the right choice for the same reason we don't use JSON as an image format. ... @user4581301 Array of structs -- each one has a std::tuple of ints, ints themselves, and an std::vector<float> ... RapidJSON and others can do it.
stackoverflow.com
r/cpp on Reddit: [Study Project] A memory-optimized JSON data structure
I think nlohmann-json tried the 'shrink' route but got pretty bad perf penalty for it. For my lib I used the same strategy as RapidJSON and deserialized data in a temp buffer, before mem-copying it to its destination (on reaching array/object end).
reddit.com
r/cpp on Reddit: New, fastest JSON library for C++20
Posted by u/Flex_Code - 241 votes and 123 comments
reddit.com
JSON parsing: simdjson vs. JSON for Modern C++ - Daniel Lemire's blog
Thus, roughly speaking, simdjson can parse, validate a JSON document and create a DOM tree, at a speed of about 2 GB/s. The easier-to-use “JSON ...
lemire.me
Recent Json library benchmarks? : r/cpp - Reddit
nlohmann/json has a great interface and is probably more well tested than RapidJSON, but the lack of regard for performance meant that if I ...
reddit.com
Benchmarks
In this section we compare the performance of Boost.JSON against the other two important libraries of interest, RapidJSON which is known for its considerable ...
230.jsondocs.prtest.cppalliance.org
Engine - Researching the replacement of rapidjson by nlohmann · Issue #16498 - GitHub
It can be observed that, in general, performance is degraded by approximately 30% when using the Nlohmann library. Given this, for now, we have ...
github.com
How does this compare with RapidJSON, JSONCpp and JSON Spirit - other popular C+... | Hacker News
We first micro-benchmarked all those and we found that Tencent/rapidjson was more than 100% faster than nlohmann/json.
news.ycombinator.com
Comparison to Other Libraries - Boost
There exist many C++ JSON libraries, but two are particularly noteworthy for the purpose of comparison: RapidJSON and JSON for Modern C++ (referred to herein ...
boost.org
miloyip/nativejson-benchmark: C/C++ JSON parser/generator benchmark - GitHub
This benchmark evaluates the conformance and performance of 41 open-source C/C++ libraries with JSON parsing/generation capabilities.
github.com
Benchmarks - reflect-cpp
It is faster than RapidJSON and about 10 times faster than nlohmann/json. It can be even faster than that, if you choose to use a different format supported by ...
rfl.getml.com
Understand popular C++ JSON libraries comparison - StudyRaid
Modern C++ offers multiple JSON libraries with distinct design philosophies. We analyze four prominent options: nlohmann/json.
app.studyraid.com
Performance - RapidJSON
There is a native JSON benchmark collection which evaluates speed, memory usage and code size of various operations among 37 JSON libraries.
rapidjson.org
JSON for Classic C++ - Hacker News
The moment nlohmann's library came out, I switched to it and I never looked back. I loved the interface and its exactly how I would've designed ...
news.ycombinator.com
Compare nlohmann/json to Glaze - Martin's website/blog thingy
Just look at the numbers on glaze's README. Beating nlohmann is a pretty low bar so expected. Glaze is in fact almost as fast as RapidJSON.
clehaxze.tw
Parsing JSON in C & C++: Singleton Tax | Ash's Blog
The fastest for large inputs is Daniel Lemire's simdjson , which uses SIMD. Others also include (4.) Tencent's RapidJSON and (5.) Stephen ...
ashvardanian.com
Replacing nlohmann::json with a much faster alternative · Issue #14710 · NixOS/nix - GitHub
Glaze guarantees round trip consistency with robust unit testing. Concrete structs are the fastest to work with, but glz::generic is still very ...
github.com
Master How to Parse JSON Files: Expert Guide - MultitaskAI
Discover how to parse json files with proven step-by-step techniques from expert developers. Boost your coding skills today!
multitaskai.com